Prisoner statue smuggled into Disneyland ride

A mannequin depicting a prisoner (described as a Guantanamo Bay victim, though it looks more like an Abu Ghraib reference to me) was reportedly snuck into one of the dioramas alongside of Disneyland's Big Thunder Mountain last week. The Wooster Collective site (which erroneously identifies the ride as "Rocky Mountain Railroad") says that it's the work of notorious prankster/graffiti writer Banksy, though nothing on Banksy's site confirms that. Link (Thanks to everyone who suggested this!)