If the distance penalty and the 10-second subtraction are accepted, that means either the distance penalty will be enforced immediately and another down played (because there is time remaining in the period), or the distance penalty will be enforced at the 3rd period kickoff because there is no time remaining in the second period. What double jeopardy in either case?
I think you missed his point. Foul occurs after the play with 9 seconds left. Penalty accepted. There are two ways it could be enforced:
1. Subtract 10 seconds, half over, yardage on the next period.
2. Mark the yardage, NOW subtract 10 seconds, which ends the half, and the penalty was already enforced, nothing to carry over.
Nowhere in the book or mechanics does it say you subtact the 10 seconds FIRST, and then mark off yardage. Why isn't the second method above just as valid?
I know, the short answer is because there is a play in the bulletin that says so, but it APPEARS to only apply to PFs and USCs, not to all penalties. And if so, then there appears to be some inconsistency in the enforcement.