Wow, tl2, sounds like you've done a lot of thinking.
At this point in time, the X doesn't own anything- his anger, his issues, his part in the failure of the marriage. The OW, his family, they are enabling him in his self - contained bubble.
I can forsee that in the near future, or perhaps for the rest of his life, he will remain that way.
NMCMNN.
You can call me Dory/ Grl.
As a wise fish once sang,"Just keep swimming!"
It's no use to go back to yesterday because I was a different person then.