Until such time as he realises that he has been scammed by the WT, he is damaged goods. I hope you two don't have any kids yet.
There are no quick fixes for his condition. He has to confront his demons and he doesn't want to do that, and you probably don't have the skills to make him do it. All I can suggest is to keep asking him questions, then not letting him weasel his way out of answering them honestly and giving him a guilt trip for any bullying, or dishonesty, that he uses on you to fool you into accepting crap answers or diversions.