I'm not doubting it, but there's nothing to indicate why on the article, or in the one video clip. What did he do? Switch voices with Elmo in one of the skits, or become a Muppet?
This would be why. He was the voice of a chicken, which was him in disguise. I'm gonna add this picture to his page. It's a stretch I guess for the category, but fun. I'll make some adjustments to the page, but feel free to remove the category if you think it doesn't count.
