Manners maketh the man

So, I was in a queue early today, waiting to buy some hot chocolate. The queue was kinda long so the guy in front of me wandered over to the magazine rack to pick up a paper, but instead of returning to his place in front of me, he went to the back. I waved him back in to his former place and he said, "Thanks. I didn't want to risk barging in." Is the world so full of psychotic queuers, so dog-eat-dog, that he really thought that I was going to go postal just because he was resuming his original position after stepping out of place for a whole twenty seconds? That's like totally super tragic or something.