DO NOT PAY A THING!!!!!!! That L will not even pickup a pen for your H without that money. You do not owe them anything. Have you ever heard of a D L allowing IOU's? I don't think so..... If I where you I would rip the bill up and forget all about it.
I actually have a better idea then ripping it up and tossing it. Bonfire....use it to start a bonfire.....Yipee....party at Cadesmom house.....If Husband and I are showing up you better make sure the beer is a plenty and cold...