Looks like TR and I are thinking the same way...
Just to clarify my prior posted questions:
If you take off the top half, is there any part of the bolt sticking out? Is it at least flush with the top of the lower half where you could cut a sclice into it with the top portion removed?
James.... come on. You have to get your SF mindset warmed up. We are working this in NDD's favorite UWOA type environment.
LOL Well, at least in the don't have access to Sears and likely have to rethread the mount scenario.
Just kidding... good suggestion. I have never used a screw remover like in your link.