I'm not seeing much to remove Heymann or Garland. There's another petition for Heymann, but that's not getting near as much traction as the Ortiz one, even when I've seen numerous commenters claim he was the one behind the case.
What's going on with these petitions is exactly the tactic politicians use to calm the populace down when they're screaming for something to be done after a scandal or catastrophe. Removing Ortiz would give everyone the vengeance they desire but it wouldn't do a damn thing because the people qualified to replace her are all just like her.