Or maybe for the same reason Obi-Wan didn't kill Vader in ROTS. In both cases the Jedi did not kill the Sith because the Sith used to be the Jedi's Padawan.
I doibt Yoda would have wanted to kill Dooku anyway. I think he was just trying to capture him. Otherwise I think Dooku would have already lost before then.
he chose to save the jedi. its painfully obvious that he needed to focus all his attention and energy on levitating the column in order to do that. which dooku knew and that was the whole point of him knocking it over in the first place.
Registered: Aug 2004
Location: Cacapoopoopeepeeshire.
Dooku had every intention of getting away and tipped a big fat crane to squish Obi and Ani. He knew Yoda would not chase him, as he was too dedicated to saving the two Jedi.