This new version of 6to4 Card Cleaner adds the full Microsoft process of fixing the problem; the program will disable IPv6, remove the cards, and then run KB980486. There still is a option to just remove the cards. Added features also include an updater, a window that allows you to set IPv6 to any of the 6 settings, and a new backend.
These cards WILL NOT show up in device manager, unless you turn on hidden devices, and WILL NOT show up in ipconfig unless you do ipconfig /all.
I also took out the window that lets you change the IPv6 setting, and made it its own app, so if you need a user to just change IPv6 they can get this 70kb app.
As always any bugs please report them, I will patch and the automatic updater will alert users a new version is available. Source available on request.