12-6-c doesn't apply, because the clock would have stopped for the helmet off, even if the BC didn't score or pass the LTG.
Even if the helmet coming off happens after the down should have ended? What other clock-stoppers could you apply that to, then?
A33 takes a handoff and advances past the line to gain. (Replay shows his knee was down short of the line to gain.) Then:
a) B99's helmet comes off. A33 runs for a TD. This is one of my original situations, repeated here for comparison with the following ones.
b) A33 runs out of bounds.
c) A33 throws an illegal forward pass to A44, who advances for a TD.
d) Either team commits a holding foul beyond the LTG. A33 runs for a TD.
For a), you've said: "12-6-c doesn't apply, because the clock would have stopped for
the helmet off, even if the BC didn't score or pass the LTG."
For b), clearly 12-6-c does apply. You wouldn't say 12-6-c doesn't apply since the clock would have stopped for
the ball carrier going OOB even if the BC didn't score or pass the LTG.
Situation b) is definitely a replay runoff that A cannot decline. There was a clock-stopper (A33 going OOB) but it was part of action that got nullified by the IR reversal.
Situation c) is much like b): a clock-stopper (A33's live-ball foul) which was part of live-ball action that got nullified by the IR reversal. We're wiping out the IFP foul. It never would have happened to begin with. Is this not also a replay runoff situation, then?
Situation d) is much like c): a foul which was part of live-ball action that got nullified by the IR reversal. As a matter of policy, we wipe out such non-PF, non-USC fouls and don't enforce them. Are we still using the flag to override the replay runoff situation? If so, why not in c) as well?
And situation a) is much like situation d): a Team B event which was part of live-ball action that got nullified by the IR reversal. How come we don't wipe out the helmet clock-stopper, at least as far as the replay runoff rule is concerned? (I agree B99 should have to leave for a play.)
I think b) is the only obvious one of these. Is there an IR casebook play or a bulletin that addresses the other three?