Clutch Pedal Going limp

[Knowles' Z06]

Can anyone explain why this weekend while at the SGMP drag strip my pedal would go limp...?

For the first time I used Mickey ETs drag Radials and they really seemed to hook nice 1st to 2nd and then 2nd to 3rd the pedal was on the floor board with in a second or so, it sprag back up...I have spoke n to some that say it was slipping from the heat and others that say it is a RPM and speed ratio issue...I wonder about the heat concept because itis not like I was drag racing all day there was at least 20-30 min usually longer before I was up again...Also it only happened here and there it seemed liike when I had a really good launch and the car was really sticking with a lot of pull....limp city

even though I have to figure this out I had a blast and put up a 11.395 at 127.8 mph not bad for a 1/4 mile with a limp pedal LOL

Eddie