Great find!
Post 92
The Cleaner has been identified as Brady Williamson, a long time democrat operative and three-decade member of the democrat debate negotiation team:
Photo at the link/post
http://www.freerepublic.com/focus/news/3474820/posts?page=92#92
More info here; see first two pics in the story that is linked in this comment:
Story:
Longer vid linked here
ID’ed
Fox news
Lou Dobbs picked up on it; next comment says he’s covering it in his show:
Hand motions
Lou Dobbs showed the vid on his broadcast (not sure which one)
Pic from other events: