Both great suggestions. I heated up the pin area with a heat gun. Had my wife hold the frame so I could hit the pin with a punch. I did cut a notch in a 1/4" piece of wood so I could place it where the glass would have been for support. After several gentle wacks with a small hammer, the pin began to move. I removed the pin, cleaned up all the areas that came into contact with the pivot arm, put a little silicone gel on all the contact points and put it back together. Attached is a photo of what tools I used. Thanks for the suggestions
JunkYardDog and blue38. No fingers or chome were harmed in this event.