Other referee on the floor

4th grade rec league playoff game(3rd round). The game is late fourth quarter and is a tight game. Emotional game, yet very little complaining from coaches or chirping from parents, which is unusual at this location. I am the lead and call a foul right in front of me on the baseline as A1 goes up for a shot. Simultaneous whistle - my partner comes over and tells me he has 3 seconds before the foul. I ask him if he's sure his call was before the shot. He says it is and we go with the 3 seconds. We explain it and, believe it or not, no complaint from the coach whose player was fouled. Play continues and a few minutes later, a timeout is called.

He is where the action starts. One of the referees in this organization (this is a large facility with multiple courts) comes out onto the floor and starts questioning my partner. As I walk over, I can see the passion of a parent as he begins questioning me as to why I allowed my partner to overrule my foul on the 3 second call. My partner was trying to reason with him, as did I for a brief second, until I came to my senses and told him to get off the court. I have officiated with him in the past and he is not a bad guy, but in my mind was WAY out of line coming onto the floor like this and I told him so as he exited. After the game, when he had cooled down, his perspective on what had occurred changed and he tried to explain that he was just offering advice. I told him, one, we didn't need his advice, two, he did not come across to my partner or I as someone offering advice, but more as an angry parent, and three, he was undermining our authority in a close game.

Anyone ever have something like this occur? I actually like the guy and we had a conversation afterwards where he finally realized he was way out of line. My concern in the future would be working with someone who would do something like this to a fellow official.