down by double digits in a hostile road environment in which he's been heckled and jeered all game by the opposing team's students.
I don't think he was singling out the coach per se, but he knows he's headed into their bench and clearly makes a shove with his arm that is outside the movement you'd expect after he had just made a play on the ball.
If it looks like a duck, swims like a duck, and quacks like a duck...