Heated, close game. A likely bad call made on the visitors, then one of their players gets ejected, visitors coach should have been ejected. Ejected player's dad goes nuts, screaming, won't calm down.... you get the picture. Game finally gets back on track.
Top of the last inning and a pitching change is made by the home team, leading by 1 run. On his way back to the dugout, home coach reverses and heads back toward the field. He is just about to cross the first base line (for whatever reason, I don't know) and home plate says, coach, you can't go back out. Realizing that he would have to remove the pitcher he just put in the game, he nods and heads back to the dugout. Pitcher records the final out and the home team wins.
Visitor coach runs from the dugout screaming at home plate ump. Yelling you aren't supposed to stop him from going out there, on and on, referring to the possible second mound visit that the ump thwarted.
Umps leave only to have the dad of the ejected player come to the other side to blast them some more on their way out.
So, was the umpire using discretion in telling home coach that he couldn't make a second visit? Or was that something he should have not done?