This play situation that third-year-guy brought up is a pet peeve of mine. I do not mind the stemming, it is the cadence that either a LB or DL uses to signal the shift. In my pregame with the coach I always ask if they stem. I don't care who calls the stem, but if the QB has started his cadence, then it becomes a judgment call on me and I will err on the side of disconcerting signals. NCAA rule book, Rule 3-4-2-b-4 covers this as well as 7-1-5-a-3. I think if we all as U's cracked down on this play situation, it will fade from the game. DL can move—as long as they are not in the neutral zone—without someone calling it out. My $0.02 with 24 years of experience.