This reminds me of the time an ump in a Jays game tried ejecting a fan from the game for heckling them and even got security involved, and the fan they went after wasn't even a fan who did or said anything.
Ridiculous how much power these umps have.
MLB Umps have the greatest union on the planet.
Wendlestat apparently also said "I don't care who said it, you're gone."
If that's not a case to file a grievance with the league then I don't know what is. Though even if a grievance is filed, league is doing nothing.