Wear a piece of red tape around that arm AT ALL times when training and rolling.
This will serve as a visual reminder to your training partners during an intense roll.
fuck that, tuck your arm in your belt if your still training.
Last night I tapped early to two armlock that weren't totally sunk in. Arm didn't get hurt, but was still sore from just the general pressure from escaping and coltrolling positions.
twinkletoesCT - See a doctor.
Stop tapping so late.
I would try that stuff Randy Couture uses... HGH? Heard it does wonders!