Throw-In Issue

[ChuckS]

8th Grade Girls Travel, I am administering a throw-in. A1 with the ball, B1 guarding her, as close as they can be to eachother while being legal. There is 6 feet from the endline to the wall. B1 starts out with arms vertical, then clearly crosses the line. I blow the play dead to report the delay of game warning.

Partner comes running over to me, and demonstratively shows me what I "should have done". By indicating to the girls the endline, and that I should have backed each girl off the endline, and don't I know that the penalty for B1 touching the ball is a T (I do), and we don't want to have that, do we?, etc..... It took 15 seconds, very awkward.

I know he is wrong by rule to say we should move each player back...but what about from a game management perspective?