I drilled out the rivets from the door side of the hinge and removed the door. The door is made with a foam core bonded to an inner and outer skin. The aluminum frame is attached at each corner with 2 screws into a piece of aluminum angle. The frame in between the corners is bonded to the skins. The adhesive on my door failed near the top hinge allowing the frame to bend and tweak the hinge also. This made it very difficult to close the door as I had to push the door toward the top hinge and up to close it.
I think I'm going to remove an inch or so of the foam from the hinge side and replace it with a piece of wood that is glued and screwed to the skins. This will give me a solid structure to attach the frame and hinges to. This pic is of the hinge side of the door with the frame removed.