You could always contact the Postal Service since they require you to locate your mail where it is. Such as the story goes a year or so ago at a campground in Florida a couple were attempting to back their TT in a camping spot and they hit a tree. The couple went to the office and complained and wanted the campground to cover the repairs since the tree hit their camper. It's one of those times you just had to be there.
As Mabynac said once your husband gets use to the fifth he'll not want to pull a bumper pull again.