WH, He's going to continue trying to get you to change your mind and help him. I think it's really starting to hit him in his wallet as to what his actions have created. He can threaten all he wants, but I don't think it will get any better for him.
The count down is on and just think...two more days and you'll be living in your own home and will not need to deal w/his calls for milk pick up, etc. You will be the one calling the shots under your roof and not have to walk around on egg shells wondering what he's doing or going to say next. Life will be far better for you and the children. Just a few more days...hang on the best way you can.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.