Originally Posted by Diversion

You've just made the clutch disc surface uneven, that's all. Happens all the time if you've dumped or slipped a clutch at an inopportune time (like you've mentioned).. My buddy did this on his G37 and flipped out thinking he broke his transmission because he was getting clutch shudder.. The shudder will eventually go away.. This happened for me all the time on my WRX rolling out of first gear..