Helmet comes off during a tackle, due to prior foul?

[Rich]

The piece that nobody seems to be mentioning is that on this play, I'm not sure that I even *see* the helmet sitting on the player's head backwards anyway.

If I'm the R, I *might* see it, as I'm the one getting the foul. But maybe not as I'm throwing the flag after the face mask foul and turning my attention then to the blocking I'm charged with watching.

If I'm a wing, I'm not looking at the runner, I'm looking at the point of attack blocks and activity.

When the helmet comes completely off, our attention is turned to that and we're easily able to kill that.

It's easy for us to say what we'd do from the safety of our keyboards.

BTW, I would not have a problem with a crew mate killing the play here. I wouldn't consider it an IW (for the purposes of the crew member buying all night at the establishment we visit on the way home). I would have no problem telling a coach or an assignor why it was killed, either.

However, the rule says "completely off." Those words were put there for a reason and I have no problem following that, either.