Flamestrike
Legend
Yup, I don't think that example was a threshold, but a solid example of in the area a GM could make such a call. The "line," blurry as it is, starts sooner.
The rather extreme example he gave was a 'maybe' so if the line starts sooner, the answer is even less than 'maybe' and much more likely definitely 'nope, you need to Hide to be hidden.'
I don't think it's far enough back to say "I ran 100' in this round and that's enough," though. If, by next round, no one has followed and the monk runs again, I'm cool with that. But, in one round, getting off an attack routine and running away? Nah, no sufficient enough on it's own. If your plan is to do this and be hidden in the same round, get your rogue friend to blow something up, or something.
Agreed.