Or the players could decide to join the conflict, but then it’d cost a turn and the player who has that instinct will probably want to change it ASAP.
Well, in theory it all happens “too fast” (whatever that means in context) for others without similar instincts or natures to join in.
I suppose that the original player might just change his mind, but Torchbearer feels like a “no backsies” sort of game to me.
We’ve always been able to - it’s how we tell where south is! 
“too fast” doesn’t sound like a whole conflict though… maybe just a free fighter test or whatever is relevant to quickly kill/drive away/charm etc. the object of the instinct?