Husband is going to have councilling and anger management and my inlaws are going to pay privately. Husband says he will do anything to gain my love and respect again.
This is not the good news you think it is.
He is trying to hoover you back. Not because he loves you and values your relationship but because he has been backed into a corner and to accept that you have drawn a line under the relationship, get divorced, and act as a reasonable ex and father to the DCs, obeying the terms of the divorce and paying you an honest amount of child support would be a blow to his ego.
Counseling and anger management only result in the abuser learning the language of victimhood and empathy, and these will be used to manipulate you and future counselors, solicitors, mediators and family court judges.
In his case, his parents are footing the bill to enable him to play you. He will lose no money if his ploy fails. I predict that you will lose their esteem as he will be able to convince them that he is partially a victim of all of this after picking up the lingo through counseling. They are also likely to see you as ungrateful for the money they have spent if you do not put out the welcome mat once he completes his courses.
Seriously, get divorced now. Don't play the game he is trying to drag you into.