The more you guys-in-the-know talk about this, the more I wonder if the O.P. shouldn't make a report of this incident to the NHTSA.
Link to " File a Complaint" pageThis sure looks like a manufacturing defect, and one that could have had much more serious consequences had it happened on a busy highway or if there'd been passengers in the camper.
There are presently hundreds of RV's under recall orders simply because of a lockset that could jam, trapping folks inside their rigs. It seems to me that what amounts to an "unsecured load" issue like this deserves the same kind of alert-to-owners.