[Wouldn't it make sense to take over for a moment, just to pull them back from the edge? Yes. Yes it would. It would be so tempting.

But then what would stop that person from just doing it again? Would you take over again? And again? And again? Where is the line?]

So what you think it comes down to is the circumstances. Even if something is considered wrong, if it seems to be the best solution to a problem then it's all right, is that what you mean?