Firstly, the site where you actually enter in your information is https, and to program your edge back to stock you just go to the same page where you programmed it with the tune. There are four options, the first, position 0, is stock. To get there i believe you just need to hit menu, then go to the option that says something like power programming. I don't have a gryphon anymore so I don't remember.
Hope that helps.
