I honestly don’t laugh at people in need of help. Really, truly, I don’t. But that doesn’t stop me from sometimes laughing at the unintended irony in what they ask. Given the way that one of the points that the Token Dissenter in the rush to Creative Commons licensing tried so hard to make was, harshly abbreviated, “this is serious, and you can’t just take it back,” I’m afraid I had to laugh (at the situation, not at the person) when I saw a thread in the MT Support Forum entitled “Creative Commons License, How do I get rid of it?” In fact, the question was “since there’s no option to delete it from the Config page, do I have to go into my template and delete it there?,” but still and all the answer should be “Why bother removing it? You granted an irrevocable license.” Whether or not you pull the template tags, the very second that you choose a license and say “rebuild all,” it’s under that license until your copyright expires, second thoughts or not.
Notwithstanding the above, Licensor reserves the right to release the Work under different license terms or to stop distributing the Work at any time; provided, however that any such election will not serve to withdraw this License.
You can change your mind, you can delete the tags, you can add “All Rights Reserved, Republishers Will Be Shot,” but the second you publish something under a CC license, it’s under that license until your copyright expires (or, as we in the US like to refer to that term, “until Hell freezes over”). So if after you’ve read and digested the full legal code (not just the deed), and decided that it’s what you want, great! That’s the spirit of generosity that I love about my favorite webloggers. But if you’re just clicking buttons because you’ve seen that CC icon on other people’s sites, please, think twice, and then think again. There are no do-overs.