Sounds to e like your H is not really trying to buy the house, but that he wants to slow down or stop the divorce and the move.

If it was as simple as waiting a few months for him to have the money to buy you out, and if that results in more money for you that you will need - is there a reason why you would not do that? (I'm thinking you want to get the kids settled in the old town before school starts in the fall, maybe?)

Or do you think that he still won't be able to come up with the money to buy you out in a few months either and you would rather take less money and get it sold now? Or is it a figment of his imagination that your share of the assets would be different if he bought you out versus if you sold and split the money?