Looking around a little bit, the solution was right in front of me, and very cheaply, I might add.
Yup, that's right. Using a torx bit of the appropriate size, a couple of whacks with a hammer to insert said bit, then using the "impact driver" that I have from Ryobi, and "Bingo". As they used to say... "Easy as Pie".
With the impact driver, the stuck bolt came right out. Somebody hit the easy button on this one.
You may be able to reuse the torx bit, but if not, they only cost pennies when buying a bunch at a time.
Wahoo!
