CV or differential could've been in a slight bind and when you landed it popped maybe. Try jacking the frame at different locations and then inspecting the frame, sometimes cracks don't show themselves until you stress the frame in different areas.
Let us know what you find out. I've jumped my XTZ several times with no problems from the frame. But I've installed the frame bracing and A-Arm bracing that UTV Crap sells. Probably one of the best $220 you could spend if you're going to get airborne in these machines.