Didn't see this anywhere else. This is from Page 2 on ESPN:
Adventures in Officiating: Facing second-and-goal on the Pittsburgh 4, the Saints appeared to execute a bouncing direct-snap to tailback Deuce McAllister, who ran for the touchdown. Announcers debated whether it was a trick play or a botched snap. It was the latter, and the official Game Book lists the play as a fumble by center Jeff Faine. Overlooked -- there should have been a penalty! Direct-snapping to a running back is legal only if the quarterback never places his hands under center; once someone places his hands under center, only that person can receive the snap. Drew Brees was under center when this happened. Rule 7-3-4 states, "Any extension of hands by a player under center as if to receive the snap is a false start unless, while under center, he receives the snap."