I posted about using the paint stripper. I used Easy-Lift-Off (ELO) from Polly S; I got it from a hobby store. It's used to strip paint from models without harming the plastic underneath; you should be able to find some equivalent at a good hobby store. The original coating is pretty nasty stuff, because it melts into a gummy goo. I basically applied the stripper, covered it with some plastic wrap (the stripper flashes off quickly otherwise), and used a small scraper to remove the bulk of the coating. Then re-applied and took the rest off. Finally a third coat to remove the final bits. Its a major PITA, but a lot easier than sanding (which I tried first), plus I didn't damage the original plastic surface in anyway.
Good luck!