What, hand-to-hand combat trainin'? It ain't that uncommon. [At first, it seems he's entirely ignoring that first part... except then he continues,]
'Sides, the point is to make sure the other's gotta yield, an' the best way to do that is to ensure they can't move. What you saw was the best way to do that, without breakin' any bones. [Sensible, right?]