If you're on the DL and are in the dugout heckling the Ump's there should be a suspension tacked onto the end of the DL stint. That's just wrong in so many ways.
What exactly is wrong about it? If you know you can't play and the ump is giving one of your teammates a hard time, why not it be you rather than the manager or Perez. He didn't make a spectacle of it and should not be suspended.