Here is a picture of O'sensei doing newaza.
No, I *think*
you're wrong, Salim. I can't be sure by just that picture alone, but I think I recognize that as a Daito-ryu technique.
I can't remember if that starts from standing, kneeling/suwari, or both... probably kneeling... but anyway, you "tie" the guy up with your arms around him, then throw/unbalance him. You then him follow down and break his neck...
... if I'm remembering all that right... I definitely remember being held like that, but I don't remember the full setup... It's been awhile, and it was also one of techniques above my rank that sensei showed "for fun".