OK, got my tranny rebuilt about a month ago, have probably put 700 miles on it since. Had to have the slave cylinder replaced at the same time. Did not have the clutch replaced, as there was over 50% left. Babied it for 600 miles, and still have not done too many redline shifts. Tonight, a buddy of mine with a 375 HP WRX (turbo, 25+ lbs of boost) and I were out playing around, and after doing a nice launch and redline shift to second, I let off, as we were coming up to a light. As soon as I touched the clutch pedal, it FELL to the back of the firewall. I panicked and pulled the pedal back up to the top of it's travel with my foot. Lo and behold, everything worked great after that. I know it can't be a figment of my imagination that this happened, but I can't figure it out. Is there some type of linkage that could have popped off, but then popped back on when I brought the pedal back up? There was absolutely no pressure against my foot when I pushed and it fell. Has anyone had this happen to them before? I really hate to just let it go, as now I am worried that it may happen again, although there has been absolutely no indication of any problems the rest of the way home.