Standing outside the room on Telestra is not an exploit because all the boss' moves still affect you. You actually spend more time killing the boss this way because it takes a bit of work to get her in range. Also, you sometimes get characters floating up on the wall and in a REALLY bad spot up on the ledge over the room because, as I said, the gravity thing still affects you when you do this. Your characters out there still get thrown around incessantly and end up in the air. The only reason it helps a boxer is because you don't end up facing the wrong direction. That's it. Standing outside the room as a normal player would not make the fight any easier. In fact, it would make the fight more annoying! Therefore, it's not an exploit and probably won't be taken out of the game. The Heigan bug is different because it avoids damage in a way the helps any group equally avoid content.