I got bit about the same way. My rescues needed feeding where they were staying at my friend's house. I'd forgotten to get an extra set of tongs and got nabbed by the male. He was such a sweetie otherwise, but he was a very enthusiastic eater when he did eat! I didn't actually do much. I though he would let go, and them my fingers started getting purplish, so i ran some cold water and pointing his face down so it wouldn't get up his nose. It made him let go REALLY fast!! XD Nothing like a freezing shower to wake you up, I guess... It bled all over, but the constriction hurt worse than the bite. It never happened again, I made sure to get tongs, but it was kind of a funny story and make me not too worried to get bit again.