A video of the first Round Up tournament shows a robot pushing down on the chassis of a robot in the act of hanging. Would this be entanglement under rule <G11>? Link to video: http://picasaweb.google.com/lh/photo/6AZ-VtTdyJOmr2WihEgrcg starting at about 55 seconds in.
From what I can make out from the video, the defending robot intentionally grabs and hooks the opposing robot with its arm. This meets the definition of “entanglement” (definition quoted below) and is a violation of <G11>.