(crossposted from my personal weblog)
All I had to do was slip a razor blade between it and the body of the mouse to cut the glue. I was then able to pop the top of the mouse off the hinges on the bottom, unscrew the “scroll ball” assembly, pop off its top cover, and clean the rollers.
I’ll have to glue the retaining ring back on with a couple dots of superglue, but the mouse works fine without it right now.
Update: Four drops of superglue, and everything’s back together and working perfectly.