Healer pulling?

[hydralus]

So I guess the question that needs to be answered is if the main tank did a countdown. If there was no countdown from the tank, then there is no reason to think a battle was about to start. Also, an attempt to force the tank to pull is exactly the kind of action that results in a "you pull, you tank" mindset.

Is that realistic in a 24-man setting? Even if a tank doesn't move in then you can just stand outside the arena and it'll reset, no?