Well, if anybody cares, I finally got the drums off with a Posi-Lock 10 ton gear puller. I used a friend, a 3 foot cheater, and a 3/4 drive breaker bar. We put the nut back on loose with a large washer behind it, and we started cranking....and cranking....then we cranked some more. Finally it popped, sounding like a 45 being fired. That Posi-Lock wasn't cheap, but it did do the job safely.
Mike