Okay, it's all done! Thanks for the help, everyone. But in fact, my method for taking it off ended up being a bit aberrant. One of my dad's co-workers used a welding torch to heat the rotor up until it got cherry-red hot, and then finally we were able to hammer it off (whew!). The rotor is all busted, and the corrosion is quite a sight.
If someone could tell me how to post pics on here, I'll show you what made this so difficult. It seems to me that there was a galvanic reaction between the rotor and the hub (facilitated by the salt put on the roads in the winter here in Michigan). It is unusual. This is the first time I changed the rotor on the Mystique. On other cars the rotor would basically pop out into my hand after removing the bolts. IMO the tolerances on the interference fit are probably too tight. Bad engineering for ya...
Shouldn't happen again, because I wire-brushed it clean and applied Never-Seeze.
