My money is on some college prankster putting that up pre-game and orchestrating the taking of the photo in order to bring even more shame and discredit on those traitorous aggies who have fled the Big XII.
Maybe worse than that. Could have been one of the liberal professors that have been hired in the last 30+ years since I was there and employed that stealth tactic to start some kind of "Occupy TAMU" action.
On a related topic, is this too touchy? : Coby, the Aggies don't cheer. They "yell".