[MJT]

Andy and Oz... read my post above. The definition of a snap says it can be passing or handing.
Now, it is obvious that a shotgun snap is the "pass" and if a regular "QB under the center" snap is not the "handing," what is?
Let's look at some definitions.
2-40, A snap is the legal act of passing or handing the ball backward from its position on the ground.
2-31-1, Passing the ball is throwing a ball that is in player possession. In a pass, the ball travels in flight.
2-19-1, Handing the ball is transferring player possession from one player to a teammate in such a way that the ball is still in contact with the first player when it is touched by the teammate. Handing the ball is not a pass. Loss of player possession by unsuccessful execution of attempted handing is a fumble.

So, in a QB under the center snap, the ball is not thrown, but handed, so in that type of snap you do not have a BWPass.

As stated above it is different in NCAA in that they consider the loss of control of a hand to hand snap a BWP.