Like the Doctor said, "For a spaceship, she doesn't do much flying". I figure that he's going to make it fly some more, just for the hell of it. It was good to see the tardis a lot more than we normally do.
It was a good episode. And it's good to see him being less merciful. Remember, he's just "lost" Rose; he's sad and he's pissed off - he's going to kill for a while.