At the Ford sponsored Raptor Assault, they jump the trucks, at least when I went. But they make it clear, and double-check, that you are in 2wd, and they also admonish you to lift off the gas pedal when you have launched. If it is ok to jump these at their sponsored school, then they are in a weak position to say you abused it by doing so. Of course, they set things up for a minor amount of air, predictable speed, etc.
I wonder if you accidentally jumped it in 4wd? Nothing else short of a bad casting explains this in terms of an impact from a jump.