Home Run....Batter Runner slaps high fives

[cbfoulds]

"Team warning" when they aren't even doing something covered by the rule - you noted, yourself, that the ball is not live.

Threatening to "take away" a run if "touching" happens during a live ball [the rule prohibits assisting a runner, not touching].

Getting your shorts in a tangle over a situation that "might" happen a couple of innings later when an actual rule gets violated, so you jump into a perfectly innocuous situation to coach the players so that the dreaded "coach assist @ 3d" doesn't happen.

That is the very definition of an Officially Officious Official.