The best thing you can do is ignore his behavior, i.e., not speaking to you, etc. The more you try to engage him, the more likely he will pull away. When he realizes you aren't buying into is behavior, he'll start talking to you again.
Just leave him alone. Keep the focus on you and your kids.
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.
