well, I got back on monday from a week long jaunt down to San Diego,
and tried to remove the bolt again today.

Drilled a hole in it, and put in a extractor...and subsequently broke
the extractor (apparently it was a pos).

So, against what is my personal preference and probably not terribly
wise, I ground down the bolt head (altho made very little damage in the
process) and re-soaked the bolt with PB blaster.

But tomorrow I'm going away for a trip to eastern oregon, so I can't do
anything on it for a while.

when I get it off, and replaced/fixed, I'll let you all know. Thanks
for the advice too.