That's nothing new, that's just Doink The Clown's "Stump Puller" submission that he used to do back in the early 90s

But then you get put in that positionIf putting @Another Man in this position is the only way I could win a fight, I'd rather lose.![]()

That isn't a kneebar, the name of it is in the post.Knee bar, works just like a arm bar in that your are hyperextending the knee
Kneebar Explained: How To Do A Kneebar In BJJ