Why would dooku allow Anakin to survive, knowing that palpy's ultimate plan was to turn Anakin over. I don't think that Dooku was left in the dark about Anakin. Basically, dooku had to know at some point that the Palpy would kill him in one form or another Yoda came in. It's a case of an edit with a scene missing. Originally, Yoda Force shoves to Battle Droids as he enters the hangar. Dooku hears this and closes down his saber, putting it back on his belt.