If it helps, WH, my ex started by saying she wanted to leave but didn't know why. Then no feelings (there's a name for that, but it escapes me), etc, and finally re-remembering the past and blaming me for wanting to leave.
It's easy to get turned around and over and under when you're near them. But as the distance grows, you start to really see what's going on.
I can't imagine your ex being able to allow himself to see it. He just doesn't have the tools.
As for your son, he is expressing himself. You can see how hard this is on him. He's angry. Really angry. Therapy might be a good investment of time sooner than later....
AJ
"Our lives begin to end the day we become silent about things that matter" MLK Put the glass down... "Yesterday I was clever so I wanted to change the world Today I am wise, so I am changing myself."