Your H is on his own journey. Don't push him away when he reaches out. Be civil and compassionate. But continue living your own life and acting as if.
I hear you about the guilt-tripping part. KF took all the feedback about kid as guilt-tripping. They just can't take the guilt. They know what they're doing is wrong but they can't face the fact.
Btw, I was wondering if perhaps your mil could learn the validation techniques. It seems that your H is angry that everyone has 'turned against' him and is on the defensive.
You can call me Dory/ Grl.
As a wise fish once sang,"Just keep swimming!"
It's no use to go back to yesterday because I was a different person then.