It's certainly the same bolt that gives everyone trouble.
Clark had the same problem with mine, but after removing the intake boxes and rearranging some things, he was able to get enough room to do his magic. Mine may not have been as stuck as yours, however.
I wish you were back in Augusta so you'd have the Performance Center to check out. I'd keep putting something like PB Blaster on it, and try it again next weekend. My buddy had a similar issue, so he just sprayed it every day for a week, and had no issues when he went to remove it.