During yesterdays OTA's Gruden discussed the progression or lack-there-of with the implementation of the Shotgun into his play calling:
You're kidding right? You're seriously downplaying the potential use of the Shotgun due to a couple bad snaps? Maybe, just maybe, its the personnel you should be second-guessing and not the proponents of the Shotgun Formation. I mean, if your center can't snap the ball 5 yards in the air to the QB on a consistent basis, take him the hell out of the line-up and put someone in who can facilitate such a strenuous task!!! This is ridiculous.
source: The Pewter Report