I feel your pain....be aware and alert and don't let him to take anything more from you....
He's brutally cut you off from his life....even if he wants you back, you should give him a real hard time....sorry to say that, I know you love him, but he's very selfish....he doesn't even consider his son...I don't see any bright future for him anymore.....wait and see....
talk to the lawyers and tell him just the result....

take care of yourself
Marjan