Amazing that a long pin got into that area and stopped the machine. I have a machine that wouldn't run and discovered the thread from the spool for winding a bobbin somehow got wound onto the shaft for the big wheel on the right side. Different colored threads were there so this had been going on for some time. Now I know better than to leave a spool of thread on that holder. It was just packed so tight, we had to cut it off. Pays to know your machine inside and out.
Carol J.