Originally Posted by
CACycling
Might be easier to cut the crank arm to split it off the spindle (cutting alloy instead of hardened steel). Could probably even save the BB that way if you so desired.
True, but neither should be necessary. A decent mechanic should be able to get the crank off.
If the OP doesn't want to let a pro try to bail him out, he can use a hacksaw to cut across the crank arm hub opposite the arm about 3/8" from the center (just outside the crank remover). He should cut parallel to the spindle until through, then use a coarse file to get as close to the spindle as possible, then use a pipe over the arm for leverage and bend til the filed end flexes open and the arm comes off. This isn't all that easy with the nut still in place, but is still doable.
I repeat that heroic measures shouldn't be necessary, and therefore saved for last resort only. If the bottom of the puller can be removed, odds favor saving both the crank and BB for reuse.