What if the Defense is Verbal During Cadence...???

[ddoom]

I am looking for other officials opinions on this scenario...

#1. All A players are in set positon, but quarterback is not under center or in his cadence. Linebacker B1 yells "Shift" and the defensive line shifts and then the offensive line false starts. The goal and purpose of the verbal defensive call is to get the defense into a goal-line type defensive package at the last possible moment before the snap.

#2. Same scenario, but the quarterback is under center in his cadence?

What are your rulings for #1 & for #2?