I think what some posters are trying to tell us is that the wound does not match GZ's story. No matter what he could have done with his wrist. TM did not sit up after he was shot, turn and then fall face forward onto the ground stretched out full length as he was found, from a sitting position. His heart exploded and he dropped right where he was at that point. jmo
Unless these posters tell me that they have experience in forensics and bullet trajectories I don't really care "what they are trying to tell us."