1) I'm thinking he's saying by like too much pull on the grab for it to let go
2) It sort of already breaks that way, but to twist a joint there would not have to be the plane basis that joints work on, they can't turn directly like that to twist.
3) The way the point system works is by a bar, when you hit someone that bar fills, and when there is no movement, the bar sits still, so pressure doesn't add to the bar, every time the bar fills you get X amount of points. So it wouldn't work for the system anyways.
4) Again counterproductive to how tori joints work, they move in a plane of x or y, based on what join it is, say a shoulder is x, then an elbow would be a y, they don't go x and y independently.
5) I don't need to adress this anyways since inmmortal8 did.