Kiki I'm so sorry your H is doing this. It breaks my heart to see/hear the kids getting hurt.
They (MLCers) do get defensive VERY quickly and IMHO they don't listen to much of anything except themselves.
He was coming around trying to reconnect with D7. Maybe he started feeling too close and backed off again. I don't understand why hsi R with his D would have that affect on him, but it wouldn't surprise me.