Is this "over"-officiating?

[A Pennsylvania Coach]

8th grade boys summer league. Second of three games, so when the game ends I'm walking over to the scorer's table to sit and wait five minutes or so for the next game to start. Close game; blue wins by 2. I don't make it over in time to get through before the handshake line starts, so I end up standing there watching it waiting for them to get done so I can sit down. One kid on white throws a fairly hard shoulder into blue's point guard. I'm stunned and decide to scold the white player, "#25, knock it off!"

Within a second or two I'm thinking about calling a T then realize that it doesn't matter anyway, blue won. But had the score been reversed I probably would've called it.

Bad idea?