Perhaps working a rather erratic and high-strung character like Telly, or a character like Snuffy who requires really big sweeping movements with that snuffle of his, he's become acclimated to such that it sort of has an effect on other characters he performs, which draws more attention to the movements . . . I suppose in a way similar to how some other performers like Frank have spoken about when it comes to right-handers getting a little too caught up in what their doing that the right hand ends up upstaging the character itself (something Caroll and others have even attested to that Frank had a tendancy to really hold an iron grip on their right hands when performing a character like Cookie Monster, for example).