And do this too:
http://youtu.be/mdaWx1gGZWg - ""UnFreeze" your Singer Slant-O-Matic sewing machine"
Full disclosure: I made the video and posted it to YouTube.
It's a little shaky, no way to use a tripod AND show the parts that needed to be.
My thinking is that if it's set to zig zag or some other decorative stitch and the stitch selectors or the zig zag mechanism is "frozen", it will hang the machine up too.
(Sorry Joe, I know you can't watch it)