I was playing Diablo 3 last night in a trance-like state, when a glass of water decided to tip over on it's own (don't use warped cork coasters, lesson learned). Fortunately, it mostly missed my newly modded Filco ergo clear, but my mouse took a direct hit. The mouse stayed plugged in while I tended to the keyboard and the spill, and by the time I got to it, Windows had be-doop'ed (USB disconnect sound, lol), and I assumed it was a goner. The optical sensor's LEDs were also very dim. The mouse was not responding at all. I unplugged it and started shaking water out of it (there was quite a bit), and left it overnight to dry. Plugged it in this morning, and was very surprised to find that it works like new!
I'm posting this as a testament to the CM Storm Spawn's awesomeness, and as a glimmer of hope for anyone else that ever finds themselves in this situation!