Originally Posted by
wmodavis
Once I had the problem and read someone's suggestion to carefully ride the bike until it comes off. Of course I had to put the other crank back on but riding it around the neighborhood for a while loosened it enough to come off.
A perfect example of turning Murphy's Law to advantage, and it works pretty well. If you want to try this method replace the crank bole then back it out about 1 turn. this will let you hear and feel when the crank pops free, but protect your ankles from any dire consequences. BTW- climbing steep hills in a high gear works best.