Originally Posted by 2door
If I understand you correctly, the engine is seized and the crank will not turn? If that's the case I doubt a small sliver / shaving, as you describe it, would be enough to bind it that much. If its bound tight enough to stop your rear wheel from turning I'm thinking you have more serious issues than a small piece of gasket material wedged. Keep us posted; this is an interesting problem.
I took a peice of wood and hit the top of the piston with a hammer and it moved down 1 inch to the bottom stroke....I still cant get it to turn by using a screw driver on the sprocket....Im going to take the srocket cover off and put a wrench on it and see what it does....I will get back to you shortly