KMB
Addicted to ArboristSite
Cut it off close to the head and then drill a bunch of holes in it. They usually come out pretty easy then.
I've done both (cut close to head and drilled holes), but the wedge is metal and the small holes around it don't seem to be doing much. I did stick the head in a vise and have pounded on what's left of the handle and the wedge and wood have moved out quite a bit. The wood around the wedge is VERY hard. When I get back to working on it, I'll put it back in the vise and try a large punch.
Kevin