[cashflyer]

Wheel hop and other driver mistakes usually damage the axle shafts, not the R&P.
Now if an axle snapped and loaded the diff with debris, you could have significant R&P damage.

If the axles are not damaged, I say to check the R&P setup. Either it was a bad setup, or as speculated in another post, a pinion nut or bearing failed and allowed the pinion to drift out of proper mesh.

Those are my guesses.