You know, this explains a lot. I have a old friend on YouTube named tmntuploader; just today he told me he had received two strikes from YouTube for uploading all the 2K3 episodes, and that his account would probably be deleted soon.
Well, he was right.
I couldn't figure out why Viacom suddenly was getting interested in removing 4Kids episodes from YouTube; I guess now that the series will be on Nicktoons Viacom wants it removed.