Wasn't what he wanted drawn up in the divorce decree? Didn't he already get what the stuff he wanted? Beatrice brought up a good question. Is what he's doing legal?
I'm mind reading here, but I do wonder if this all stems from the fact that you really did sell the house and it the loss of his dream as well?
Now, I'm not saying you did anything wrong. You absolutely could not hang on to that place by yourself waiting for him, nor should you want to. I just think it's further evidence of how twisted the MLCer is.