Forgot FileVault 2 password to Macbook Air, how to reinstall?

I have a recent Macbook Air that has file vault 2 installed. I reset my password this morning, but cannot remember it at all this afternoon. I have all my files backedup so I am not worried about data loss. So I went to do a reinstall from the recovery partition and its asking me for my password... which is the password I do not know. I also do not remember putting the recovery key down anywhere (stupid I know).
How can I just reinstall Mavericks on the system now?

Apple has not provided an easy way to recover from this condition. See this thread.

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