Well, this is... Already different. Where he'd been expecting something sharp like a punch or a kick, he gets grabbed and twisted instead. His reaction speed is way better than it should be, but he unhelpfully reacts in the wrong direction, punching out and giving Irahl plenty of arm to manipulate.

And Vincent is not the most flexible guy. He can't really wriggle away, even though he tries. Irahl gets to watch his face contort with acute discomfort as he attempts to swear his way out of his painful predicament. And then he just gives up and does what he always does, which is try to muscle through.

He'll try to just bodily roll away and drag Irahl with him. Barring that, maybe he can roll over Irahl and squish him until he lets go.