I generally don't have a problem deciding what moves in the fiction should go under aggro, seize or manip, but right exactly now I'm in a position in a game where we're a bit unsure.
This guy has threatened me and made me angry, and now I've got him by the throat, literally. I lean in close to him and growl into his face, "take that back now, or I will break you in half, right here, right now". Neither of us is waving weapons around, and my character is clearly bigger and stronger (huge body, hard+3, not to be fucked with-equivalent).
Would you play it as aggro or manip?