I will wager that the erratic behavior is fear and guilt. I think the more you can ignore him and his outbursts the better. Maybe suggest that you guys discuss any issues later when things have deescalated a bit. OD and I could not be civil at the beginning. Too much pain. As time goes by this should lessen. But talking to someone in this state never leads to a good place.

You are strong one. You have this covered.