I am sorry that your xh was mean, but he has to be that way in order to move forward. He has to vilify you in order to justify why he left and is doing the things he's doing. Oh, no, he can't look in the mirror and say "I'm the one responsible for all that I've put my wife and children through". He can't admit it now or maybe not ever. But leave him to his meanness. If he were such a happy camper in his new life, he would be acting that way.
I'm happy that the divorce issue is behind you and now you can move forward and know what to expect from your xh. Now, you can begin to heal from this ordeal and really start to focus on what is important right now: YOU, your health and your children.
Vge, God does work in mysterious ways. He will not forsake you.
Please take care of yourself.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.