did you check the return spring on the pedal assembly yet? I've broken one and it did the same thing...

also have had the throwout bearing pop out of the clutch too...to fix this you need to pull IC, starter and tranny plug (rubber thing on top of bell housing)...then get a prybar and push the bearing back into the clutch...this generally will only happen if it wasn't previously seated completely.

check the pedal assembly before you go nuts dropping the tranny, new clutch, etc, etc....

hell, one time I had the clutch fork rod back out (driving without a the plug bolt on...lol)...

let's just say I f'ed around with subaru's in a lot of ways a lot of times