The ability can be used at any time, no matter what the fiction had established up to that point. Labeling something as "not supernatural" doesn't change my opinion that the ability to force an NPC to take a specific action is a supernatural act.
You want to play a very different game than what I want.
I realize it's a very different thing, but I ask to know if I want to set up a follow and if so.whichnibe. How were you about the B/X morale rules?
Also, are there any combat things (force a retreat, push back) that rely on forcing the defender to make a decision to move back that you are ok with?
And finally, I'm pretty sure there are things I can bring up in threads that will make at least 1/3rd of the readers attack. Would it be better if it was some percent of the opponents instead of all? (Assuming appropriate language and they got.appropriate situational bonuses to will saves).