Ohh, so it's Uniform Commercial Code/UNITED STATES CORPORATION stuff. I looked into that pretty in-depth a couple of years ago and found most of it to be bunk--that, and too many folks who advocate those "magic bullet" solutions end up in prison.
As far as the cancellation, here's a link to an example: 
You'll send it to your local voter registrar (i.e. mine was the McLean County Clerk's Office) and make sure to include: the date, your name, birthday, the mailing address that is on your voter registration, your signature, and obviously, that you're requesting your name be removed from the voter rolls. Handwritten or not, I don't think it matters, but if you type it up and print it out, make sure your pen-to-paper signature is there.
To your last question, I don't know anything about the latter--the method of strategic withdrawal that I recommend and discuss is just simply removing your name from the voter rolls.
Thanks again and please let me know if you have any further questions.
-Shane