Ohhhhh peace...I am so sorry you had to deal with that tonight. I am sorry that your H can't see what he has done wrong in the M and he blames you. I am sorry that your kids were upset.
If your H is pushing the D through, then you probably have no choice but to go through with it. He may have convinced himself that this is what he needs to finally be happy. I know that has to hurt but it is movement and if the D does go through, he may figure out that the grass that he thought was so much greener is actually weeds!
Good luck with the L tomorrow. Let us know how it goes.
I know you are strong and can handle anything that comes your way...so please know that there are better times ahead.