Hmmm, on the good-bad scale, that certainly falls on the "bad" side! I wouldn't try to rush, but it could happen that as things start to move he might actually engage his brain. Something good could even happen in the "joint" parenting sessions, perhaps?
But, you are right, if he can't forgive, you are stuck (and vice-versa, if that was the case).
I'm going to have to have a talk with Kalni, when she gets up!