I found this link. http://www.kongregate.com/forums/7/topics/241772?page=1#posts-5208057
Why was my highscore removed?
We have an automatic system where Kongbot goes through and clears out any outlying or suspicious scores. If you find that your score has been removed, you can e-mail us at firstname.lastname@example.org to retrieve your score and have it unhidden.
Please include your username, the name of the game, and the name of the highscore that is hidden.
:> You better get in on this too psi!