After reading the above, I also successfully used a strap wrench from Sears. Before it would work I cleaned the pulley surface with brake clean and wiped it dry (to enhance the bite of the strap). Also, I ground down (shortened) a "L" shaped metric Allen key to make the rotation to fit into the hole at the center of the pulley. It was a tight fit and to enhance clearance I removed the four painted bolts at the top of the radiator so the radiator could rotate forward a little bit. When all was in place I placed a pipe over the long end of the "L" shaped Allen key and got sufficient torque to break the bolt free.

The radiator fins are sharp and some blood was sacrificed to appease the gods. Thanks to all.