How to unvalidate a post.

When posting in Swym the validate answer box sits in exacltly the same location as the OK or Send button does in any other web or windows app that you would use. Hence users easliy hit this by mistake rather then clicking on the small paper plane button that doesn't really stand out.
So now the post has been validated by the poster. This seems a bit odd that anyone would ever want to validate there own post so why is the option even there (Like saying aren't I great...).
So your now posed with the question. How do I un-validate my post that I've accidentally validated.
From what I can see you can't...!!!