Sometimes you have to rant. :)Better here than at him!
Definitely keep detaching. Don't do him any special favors. Their bad behavior does make it easier to detach I think - these is not the Hs we know and love.
Do you think skank is pushing for the D now? I don't know anything about D laws and I know they vary from place to place, but can't you have him pay at least some of the court costs in the settlement? I have no idea.