I have a feeling he thinks only if he did this or did that it could have been different with you guys. Since he didn't he thinks if he had a fresh start he could avoid that with his actions. So he thinks he could avoid it in the future.
Problem is, it takes two to interact. So no matter how well he does, if OW isn't as well schooled as a DR tactics and he isn't either, they will fall into the same pattern as before. What can we do? Sit back and watch the train wreck. I'd like to think if they do go down that path, the train wreck will happen before anything is final and you guys have a chance to repair, that is if YOU are still willing. I guess thats why they say have faith and stay consistent. That train wreck will happen, not if, but when.
