Foul Behind the Basic Spot

[HLin NC]

But that is not what happened IN YOUR PLAY. There was no pass down field. There was only a snap. The snap ended when the QB cleanly possessed the ball. He ran, he was tackled. Running play for enforcement purposes.

Under your present reading, there is no such thing as a running play, ever, as all scrimmage plays begin with a snap.

The rule book can be complicated in parts. You enforced it correctly.

[Rich]

When it's you against the world, back the world.

Even with your clarification, I'd enforce it as a 15 yard mask.