I have seen it suggested elsewhere that
you can sometimes get a stripped crank
arm in such cases to loosen from the
BB spindle by simply riding the bike
around for a while with torquing nuts
or bolts removed. I've never been
unfortunate enough to have to try it
out, but it sounds like theoretically
it should work -- at least on a square
taper crank.

Probably worth a shot, since crank
is a goner anyway. Are you absolutely
certain there's not enough meat left
in the hole to retap it to one of the
older, larger crank puller sizes like
TA? A good shop could probably do
this for you and save (and remove)
the crank.

Mike Larmer