Can't remove passenger axel!

I had to replace the passenger axel, the old one came off easy enough and the new one snaped on with out any problems. I didn't check the axel before I installed it and...... Duh, wrong axel, the parts guy ordered the drivers side. I figure no big deal, I'll put the old one back on and order the correct axel. No such luck!! I've been prying, pounding and I'm about to cut it off!
Any suggestions, other than .... always check for correct parts!:banghead: