Thanks for the 0.2 update. Your efforts are appreciated. I cleared my cache in six Windows browsers IE8, IE9, CM26, OP12, SF5 and FF20; Firefox 20 is the only browser that recognized the cookie fix. The update was tested on a virgin localhost WordPress 3.5.1 install (Responsive Parent 1.9.1).
Also tested on live site gregory-george.com (Responsive Child 1.9.1 with other active plugins) in all previously mentioned PC browsers and Android 2.3.5 Google browser. Opt-out failed in all browsers except Firefox PC and Android.
I would try to work the issue to help, but my code skills do not run that deep.