My theory isn't just a theory about what happened in those final moments, it's also partially an examination of what was going on with the two of them that day. So bear with me, this may be a little lengthy.
There are many red flags to me that things were not normal that day.
1. OP testified that he left the house early that morning to beat the traffic for his financial meeting. He said he got there an hour early and met a friend for coffee. He was very vague about it and did not say with whom he met. My hinky meter went up on this one. My speculation, that was a planned coffee date. I don't know if it was with another woman, or if it was a business or family matter that he wanted to keep hidden from Reeva. Not sure. But I was left with that sneaking feeling that he left early to meet someone.
2. He then testified that he was supposed to meet up with Reeva in Johannesburg that afternoon after his meeting but for some reason, she decided to stay in Pretoria and get stuff done at his house and he ended up making plans with Justin Devaris to have dinner with the guys.
3. We know that his financial meeting didn't go well. Reeva sent him consoling messages and suggested he spend the night with family. This was odd to me. I get the sense that his "hurdles" weren't just about money. The fact that she suggested he spend the night with his siblings, Carl or Aimee, tells me that something else was going on. From her texts, I also got the sense that she wanted to go home that night, not stay at his place.
4. After looking at his afternoon/evening phones calls again, I see that he was talking to his Dad, Henke, a few times on the phone that night. One call was at 17:56:51 (307 seconds) and the other call was at 18:47:59 (56 seconds). Could this also be an indication that part of his problems that day were family related?
5. OP testified that he and Reeva exchanged more messages later in the day and he ultimately decided to cancel his guy's dinner and she declined Samantha G's invitation to hang out and watch a movie. Again, I didn't feel like I was getting the whole story from OP on the stand. His accounting of their plans that night felt very made up. I really get the sense that one of them felt forced to be at Oscar's that night, but I can't figure out if that was Reeva or if it was Oscar.
6. He testified that he got home about 15 minutes after Reeva and he started to say that he parked his car in the driveway, went to the front door and it was locked and the dogs were running around the house... and the Judge cut him off. She told him to slow down, he was going too fast. When he picks up with the story, he skips that part and just says that Reeva was in the kitchen cooking dinner. The way he was beginning that sentence gave me the impression that he was a little ticked off when he got to the house.
7. He says they chatted for a few minutes and then he disappears upstairs for pretty much an hour. His accounting of this hour, I think we can all agree, was bizarre. We know from the iPad evidence that *advertiser censored* was watched on his iPad but OP refused to admit to that. I think the hour by himself upstairs is indicative of somebody who had a crappy day and needed space.
8. They then have dinner and OP testified that he helped her with her modeling contract paperwork. He made changes in areas that he thought were not good for Reeva. I can see this potentially turning in to an argument if the jealousy/control factor was kicking in, especially if he was already in a sour mood. He said that typically they watch TV downstairs after dinner but this night they were both very tired so they skipped that. Again - red flag that all was not "normal" that night.
9. They go upstairs and he describes very mundane things such as brushing teeth, drinking tea, talking about cars. They very well could have been bickering at this point or maybe they had sex and he didn't want to testify to that, who knows. But the fact that his details of several hours spent together with Reeva that night were extraordinarily boring and vague, tells me that we didn't get nearly the full story.
10. We do know that he chatted with his cousin on the phone. OP is a master at keeping up appearances, so he could have seemed normal to his cousin that night, even if he did have a bad day. Reeva could have very well done some exercises, maybe to blow off steam.
11. Gina Myers has spoken in interviews about how the text she got from Reeva that night was not her norm. Typically she was very bubbly and always told her she loved her, but apparently the text was very direct that night. We have not seen this text, nor has Gina testified, so this is really just a side note to add in to again illustrate the not "normal" tone of that night.
12. Reeva had food in her stomach which had to have been consumed sooner than the 8 hours that OP testified about on the stand. It is my belief that they never went to bed that night. I think it was a mix of arguing, cooling off, arguing, cooling off, etc. Just an overall tense night.
13. Around the 2am hour, things escalated. Mrs. van der Mewre testified that it started at exactly 1:56am. That means she looked at her clock when it woke her. She heard a loud, angry female voice intermittently for an hour. At one point she got up out of bed to see if she could see anything from her balcony, but she could not. She had to put a pillow over her head to go back to sleep. For anybody who has been awakened late at night by loud arguing voices, which I have, it is very annoying. I think she was speaking truthfully about what she heard. She seemed very upset about it on the stand. Surely if she didn't have to be there, she would not have been. Her husband identified crying after the fact as being Oscar. It was "crying" not blood-curdling screaming. He likely heard Oscar after the final shots. The fact that the arguing and the crying were coming from the same direction/location tells me that she heard arguing in that house an hour prior to the gunfire.
14. I think the real heated arguing started elsewhere than the bathroom. I think they were either in one of the lounge areas or in the bedroom. I think the bedroom door was closed by Reeva, possibly even slammed in Oscar's face and he flipped out. She wanted to leave. Somehow the disheveled jeans are tied in to her trying to leave in a hurry. I do not buy for a second that the broken bedroom door happened from him kicking it. That is one heck of a crack in the bottom of the door. His prosthetic leg would have been pretty decently shattered, I think. It would have taken him 3 seconds to lean down and undo the floor/top latches to open that door. No need to kick it whatsoever. But it's not just the bottom crack that we see. There are two good "whack" marks right near the door handle and what appears to be two separate pellet marks. One hole that has an entrance and exit, and the other appears to be a grazing mark. I think the first set of bangs very well could have been the airgun shooting at the bedroom door. I also think he may have used the metal baseball bat on the door, but don't think anybody would have heard that.
15. The Stipps testified that the screams escalated and climaxed, and the sounds got closer. I think this was Reeva running to the bathroom. She very well may have had the cricket bat in her hand for defense.
16. I think Reeva also had her phone on her (to call police) and either Oscar caught up to her and whacked it away from her, or she dropped it, leaving it on the ground with the cover knocked off. This would have really pissed him off.
17. Reeva scrambles in to the toilet room and quickly locks the door.
18. Oscar first uses the cricket bat to whack the metal plate, in anger. He also takes a whack at the door. Reeva's screams are escalating.
19. This is when the Stipps and Burger/Johnson heard the intermingled voices. Reeva screaming for help and Oscar either mocking her cries for help or maybe even pleading with her to please come out. Reeva is facing the door, literally pleading for him to stop and for help to come. I think they were both desperate at this point.
20. Oscar has had it. He's totally in a rage. He retreats to the bedroom and gets his gun. Whatever final words or screams were yelled, he just can't contain himself. Fires off the shots through the door. I think there is a very good chance that he could see her through the crack.
21. He likely paused for some moments there and just put the gun on the ground. Picked up the bat that was already in the bathroom and hit the door one more time (this was the lighter strike that hit right on the break, so it's very possible people didn't hear it) and started ripping the panels out. He walks in, picks her up and puts her on the bathroom floor. Goes to get his phone and calls Stander in a panic. I do think he was very upset at this point. He probably could not believe that he actually just did this and is terrified and upset. He was sobbing. Not totally knowing at this point what he's going to do. Stander tells him he must call Netcare. To comply, Oscar does that, but doesn't tell Netcare the truth about the injuries hence, no ambulance. He's in panic mode, very upset, his mind racing a mile a minute.
22. He runs downstairs, unlocks door and gets plastic bags. I think there was something he was trying to hide. I don't think he was going to get rid of the body. That one is a little too far-fetched for me. I think he wanted to get rid of other evidence, but I don't know exactly what. During this timeframe, he accidentally calls Baba (crap!) and Baba calls back. Again, he literally does not know what the h#ll to say so he blurts out "everything is fine" and hangs up. Again, crap! He knows this whole situation is BAD.
23. He carries Reeva's body out of that bathroom, he has to get her the heck out of there. He walks with her down the hallway, the last of her weak heart beats create the arterial spurt from her arm (as she was only just shot about 4-5 minutes ago.) He's up on the landing and sees everybody arriving at the door, he carries her down the stairs....
Now from my theory, you can see that he has his prosthetics on the whole time. I am currently of the belief that he was not on his stumps for the shooting. I know that this conflicts with the height of the bullet holes but Mangena did leave open the possibility that he could have been shooting from the hip, although not a probable stance.
OP stated a few times in his testimony that he was "crouching" in the bathroom as he approached the intruder. Although I don't believe the grand majority of what he says, I wonder if this may be one of those little truths that is weaved in to his story that he accidently blurted out.
Once I started thinking about that and adding it together with how mobile he seemingly was to shoot 4 times through the door, rip the door down so quickly and get her out of that room fairly quickly... it dawned on me that maybe we had it wrong. Maybe the legs really were on the whole time and his stance was not fully upright.