I spent nearly two weeks trying to convince an individual that the pin could not be driven out from the bottom. He even attacked the frame with a Dremel tool to grind out a relief in the frame to remove the pin! I created this drawing to explain the process and it still took a couple of days to convince him. 
Ron, I respect you for your great knowledge and patience but have to ask,
is it really worth wasting your time trying to convince such a fool of his folly?
BTW, great drawing. Thanks
Charlie