Yesterday,
Alternator pulley 3 - Nicolas 0.
I started by soaking with penetrating oil every day before leaving work for the last few days.
I used the MN tool with some long steel pipe on the ends of my wrenches for leverage with the alt still in the car - wouldn't budge. I removed the alt, and (I know you're not supposed to) used an impact tool - wouldn't budge. I had to let my impact cool down.
I obtained a MAPP torch and heated the inner ring of the pulley cherry red (probably dumb with all the penetrating oil, but the fire blew out) - still wouldn't budge. (On the plus side, I can now make crème brûlée and solder copper pipe...). Short of an angle grinder, I'm not sure how the heck else to remove it (and odds of damaging the alt itself seems pretty high with that approach).
So it looks like I'm in the market for a new alternator, even though mine is perfectly good except for the pulley. Grrrrrr....