coach, robx, puppy dog tails, and gucci loafer are the go to guys here. they have EXCELLENT advice, so search them out.
Bobby, I know how much it hurts, but you have to back way off right now. Take a deep breath and just drop the rope.
You also need to draw clear boundaries. She wants out? She can get the hell out. Don't argue, beg, plead....you know the drill. Don't kiss her ass. Don't act out of fear.
Be prepared for the most unbelievably cold, cruel behavior from your w. But don't react. Be minimally polite, short yes or no answers. Be busy. Don't play her ridiculous game.
How many and how old are your children? Take the high road with them when it comes to their mom. They will see for themselves how she is treating her family.
Hang in there, sweetie. So many of us are in your shoes.