Look at the pivot point. Look closely for a very small tab just visible on the bottom of the wiper arm. Lift the blade as far off of the windshield as you can, take a small common screwdriver and pull the tab out. It will only move about 1/16th of an inch. When you have it fully pulled out the wiper will not sit back down on the windshield. Rock the wiper arm up and down a bit and it will come right off.
