Wow, Jenny. Sorry H is being a jerk yet again. I agree w/ you about him making the choices. It is amazing how he respected you wanting to wait until after the holidays and BANG let me drop the bomb again. I'm sure I am biased as I too am the victim of a WAS, but your's has really shown qualities of the lowest of low lifes.
I think it is great how well Brit and W coparent, but they are what I think probably not the norm. Each sitch really needs to be looked at seperately. I do agree w/ your H that you need to do what is best for the kids. I however don't think that is spending so much time w/ your H and his winner of an OW. She has already shown that she can't provide stability. I wonder if she is as interested in spending as much time w/ your kids has your H is. I am guessing this may place some strain on their lovelife.