Again, anything is possible in this situation. Until we hear what LE thinks happened at trial, everything is just a guess. Right now we know that there were a few phone calls, a few pm's, and a meeting that resulted in a death at PTL. From the bond hearing we also know TM was keeping journals and that SM was agreeing to several things, like being handcuffed to the bed, to make things right with TM. But IMHO even that is suspicious since it came from SM to LE. I mean he wasn't exactly forthcoming about anything else but the little tidbits that kept him in a good light.
He may have even loved Heather. I don't doubt there was some feeling involved, just like I don't doubt that they were together more than 3 times yet he told TM that to keep the affair minimal.
But, he has been in jail for several weeks. If he was the 'good' guy in all of this, he would have already started speaking up. If he cared for Heather, Heather would be home with her family right now. He still is making the selfish choices, the things that make him look (what he thinks) the abused, poor guy. I don't think SM has anything over his head. The kids are no longer a worry for him, she no longer is living with them either so the kids can't be the reason he is keeping quiet and staying. No, I think he just is mentally unstable as she is, a perfect storm.
But...even with that...it doesn't mean that what you think might have happened that night isn't what happened. For me, I just can't wrap my head around giving someone that much benefit of the doubt and still praying that she comes home. The two don't reconcile for me. In your scenario I feel like he would have already brought closure to the family.
IMHO.
Kelly