What happened? Is it just a clutch adjustent?

Well many of you have read my problems with my tach getting stolen. Well bought the new tach and was testing the shift light. Had to take it up t at least 4500 to get the light to activiate. Well I am in 1st slowly accelrating whern the light goes off, when I put the clutch in to switch to second the clutch pedal went all the way to the floor It made a clicking sound on the way down. I couldn't get the car out of gear and the pedal wouldn't come up. I then slowly rolled to a stall. With the car off I got the pedal up but it would just go flying to the floor again and i couldn't get it out of first. Finally i got it into neautral and forced it into 1st and drove it home. I let the car sit for about an hour figuring my clutch or trans was shot. I went to get something out of the car and for kicks i pushed the clutch in. It's now fine again and I can row though the gears. Am I ok now was it just some type of wierd fluke or should i get the thing checked out. I have been told that it possibly just the clutch cable that is the problem.. Everything but that has been upgraded in the car basiacally.

Anyone else?