smoked my clutch

[WADS56]

I just bought some new tires so I thought I would break them in a little. I did a few 3rd gear burnouts with the linelock on resulting in massive amounts of tire smoke.
Anyways I took the car home because I told my friend that I would install shocks and struts on his camaro. After we finished I told him that I would take him for a ride in a real car
We went out to the road... I set the linelock, put into 3rd, reved it to 5000rpm, and let the clutch go. I looked into my mirror and I saw no smoke (Crap). I shut it down and my clutch pedal was soft as a sponge. Now the clutch won't disengage because it is welded together or something.
I know that a 3rd gear burnout takes allot of work, but that clutch is rated up to 700hp on a 3000lbs car with slicks. This burnout was not even on slicks it was on a set of BFG comp TA's.
If something were to give it should of been the rear end. Should I be mad?

Wade