The ejection came in the eighth inning of Wednesday's game between the Daytona Cubs and the Fort Myers Miracle.
The Daytona Beach News-Journal reports Cubs manager Brian Harper was arguing a call at first base when he heard home plate umpire Mario Seneca bellow "you're out."
Harper says he thought he was being kicked out of the game. Instead, the umpire ejected the music man.
The public address system at the stadium was shut down for the rest of the game. The newspaper reports fans took it upon themselves to announce players as they approached the plate.
The Cubs won 2-1.