This wasn't poor sportsmanship and all. And they didn't even the toe the line of what is legal on the field

The ball was actually snapped. That starts the play. So they followed the rules of the game.

And the other team was just thrown off by the quarterback strolling through their line. But the ball was clearly snapped.

I mean it was a trick, like all the plays in any sporting game. Its a good lesson in paying attention that's for sure. And it was funny.