If you run into one of those "you pull it you tank it" kind of tanks and they're doing that thing where they look like they're gonna pull more but keep running back to the first group of enemies, either give them the swift boot or eat the 30 minute penalty. And if they decide to "punish" you by letting you die from accidentally pulling mobs or hurl insulting remarks at you, report them immediately.

The only way to deal with those kind of people is to fight fire with fire, because it's the only way to get through their skulls that their behavior is unwarranted and unwelcome.