So, I just bought back my beloved 40mm lens now that I had the money, went to a concert last night to do some shooting and I got one photo out of the lens when my camera jammed completely. Won't wind, won't fire, lens won't come off -nothing. I have tried the trick where you open the shutter to cock the lens through the back, but it's a no go. It won't turn. Can someone help? I have to wait for the tech to come in to my local shop next week so I have 5 days to mess around before this is gonna cost me. If anyone can help, they'll make my top ten favorite people of all time list. Thanks...Jordan.