Embarrassed! Isn't this an admission that this particular "spot" is completely fair game in a political campaign? And why didn't the journalists notice it? Could it be their bias preventing them from recognizing a flaw in the spiel of their favored candidate?
They were not embarrased.
They were frustrated their intentional ommisions were caught and so they called it "embarassment".
There are no journalists in the daily mass print media, only propaganidists.