IMHO, it seems that those responsible for airline security in the US have got their priorities wrong. The "no standing up within 30 mins of landing" rule an over-reaction to the present situation to the present situation, especially if more fundamental issues are not being addressed. Is it REALLY true that luggage going into the hold isn't X-rayed?? I heard it on the news, but I'm having trouble believing it, because it seems such an obvious and fundamental point.
On a related point, a friend of mine was travelling in the US on business a couple of weeks ago, and was about to fly home (don't know which airport) when a gentleman of middle eastern appearance was asked to leave the aircraft (I don't know why - whether he was actually misbehaving, or whether as a result of hysteria by fellow pax/crew). He was taken off, BUT HIS LUGGAGE WASN'T! That would be unthinkable in Europe.
So my unhappy and frankly rather nervous friend had a rather uncomfortable flight back to the UK (have to admit, he's a braver soul than me - I think I'd have got off!)
Surely if a pax behaves/looks like a serious security threat, you take his luggage off too? Not to do so seems to me to be asking for another Lockerbie.