windshield wiper removal

All right guys what's the secret to removing the windshield wiper arms. this is on a 64 dart. I removed the nut on the end but the arms won't budge. Sprayed a little wd-40 and tried prying upward with a 3/8" open end wrench but no luck. Am I missing something or do I just cut them off?

Help!
thanks,
Gary