Your H is being a knob. That's not a word I normally say, but I'm mad with him too (and Jeff's W, and Mishka's H today).
That aside, the information in the paperwork totally says that this is not about you. He's got himself into a panic and is trying to take action. Show the TAP he's done something.
I think the legal S is a good idea. And taking some time is a good idea too- decide what you really want to do. If you want your M, we will support you (and I think the TAP moving in with him can't hurt- he'll get fed up of her more quickly if she's ear-bashing him the whole time). And if you don't we'll support you too.
I'm so sorry things have come to this- honestly, knb is te oly wword I can think of. You're amazing- beautiful, strong, intelligent, empathetic, dedicated, loyal, loving, fun, sensitive. Most men would kill to have a woman like you by their side.