Well, it seems he is a jerk! Oh, wait! We already knew that!
I guess it's time to just let your attorney work. Have H served by the Sheriff. The thing that may turn out to be good for you is that I don't think he understands the process, which can only work to your advantage. He doesn't get that accepting service doesn't mean he agrees with the settlement. I have a feeling he is the sort to cut off his nose to spite his face... to the point that he will try to fight the unfightable (like CS numbers) which is just going to hurt him in other areas, I would bet.
Stay on the high road, but try to limit contact with him even more, I think. Since he is around the kids (if only a little), and since the mere thought of you seems to send him into a tizzy, it can't hurt to stay away!
