Cut it off. sawsall is used, but if you have a multi-master tool it will be easier.
No, Shoe... It goes on the other end of the bolt. And you never try to turn the bolt at all. This is like a chisel in a vise... it cranks down on the nut, forcing (cutting) itself right through the side of the nut, completely destroying it so you can just pull (yank, twist, pry) the "split" nut off the end of the bolt with a pair of pliers. This tool makes history of the nut. It's gone. Destroyed.I was thinking that it cut the bolt head off, but it really digs in to the head allowing you to turn the bolt.