Driveline vibration

[Van B]

I had a vibration while on Power Tour. I only did the first few days, but when I was on my way home from the Racine stop, a friend of mine pulled up next to me and said it looked like I had a bent axle because my left rear wheel was moving back and forth.

I have a stock width 12 bolt with factory type axles. When I got home, I jacked the car up, ran it and verified the wheel wobble. I took the rear wheels off at work and spun them on the balancer-they look to be true. Tonight I took the rear brakes off and ran it on jackstands again and the axles do appear to be bent.

Now my question. How do you bend axles? My dad thinks it is from hard cornering at the road course, which I doubt. How else can it happen? Hard launches at the dragstrip?

I am now thinking that they may have been that way since I bought the car.

Opinions?