This directive tells you and me to stay in your seat. The terrorist scumbag was in his seat an hour before landing. If he had started his fuse on final approach, no one would be able to stop him.
This directive grants a victory to AQ, despite the failure of their detonation system.
Thanks to Obama, Napolitano, and the morons at TSA, our air travel has suffered a noticeable decline in quality. That's more or less AQ's objective, even if 288 souls escaped this time.