Tranny Or Clutch Problem (Please Help)

[EklipzGS]

I drove over a bridge with a tiny bump, and every time i hit this bump my car pops out of gear, but the shifter is still in first and it revs up like if you had the car in neutral. So I turn my car off and started it back and you shift the shifter but the car wasn't going into gear. Ok i left the car on the bridge for an hour and waited for my uncle to come get it. When we get back to the car we started it up and it went into gear so i drove it, but then the same thing happened again. I wanted to know if this is a tranny problem or could it be the throw out bearing?

 

[TSIfreek]

What I would do is try it in another gear and see if it pops out again. If it doesnt what ever gear you were in it pops out the syncros are shot.
The throw out bearing has nothing to do with your problem. Does it only do it going over that bridge? If so suck it up and hold it in gear when it happens.