[Adam]

And as for "why would they fail..." Don't know why, but it happens all the time and they end up making clarifications later (some not announced).

Example. A few years ago, an unannounced editorial change change the penalty for a player catching a throw-in pass while having OOB status. Previously, it was a throwin for the opponent at the spot of the catch. The change made it a throw-in violation with the ensuing throw-in brought back to the original throw-in spot. It got discussed here, and within a year or two, another unannounced changed reverted it back to a simple OOB violation.