What do you make of Romney’s comments on problems with Olympic security?

Romney finds himself in a bit of hot water after going to London and criticizing the Olympic security he found there.  The British Prime Minister, and other Brits, took exception to the remarks.  Romney thus found out the hard way what he should have already known — even when something is absolutely true, the wisest policy is often to refrain from saying it.

Of course, Romney is retreating and all will end in smiley faces.  But does this rather surprising (to me, anyway) bit of tact and common sense illustrate a deeper problem?  Shouldn’t someone with Romney’s experience have known better?  Shouldn’t he have been better prepared by his advisors?