Just as a follow up..... spoke with Newmar this morning.... the rep I spoke with seemed to be concerned, and I sent them the pictures. Have not heard back from them at this time.
I have to think that this is more than a potential problem for several manufacturers.... the seat belt looks like the same one I have seen in many different brands of RV's.... and is probably a generic assembly that is supplied to many. Typical attachment on the floor and wall just above shoulder height next to the captain chairs. My RV is a 2013 Newmar Canyon Star, so I would tend to think owners of coaches in the 2012 - 2014 year ranges might be involved, but it won't hurt for everyone to take a close look.