Trusting, I'm glad that your xh was calm this holiday and came to visit w/you and your family for a bit. Yes, the ow's true colors are coming out. The tables are turning and he's going to get a full dose of what pressure and control are really all about. Sounds like she's starting to feel a bit threatened by his visits to your home...oh well, she better get use to that. Many of these fools end up being pressured to get married and they do it and then regret it for the rest of their lives because they are too proud and/or stupid to realize that they didn't have to do it. They don't know how to say no to the op while in crisis...it's really going to be interesting to see if he does set a date or if he will break it off w/her.
I agree w/EverHopeful, continue on w/your life, the life you are now enjoying. You've come a long way and do not need to fall back into the rabbit's hole again. Sounds like the new year is going to be a interesting one for many.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.