The thing Rondo needs to realize is that even if Alston's 7 feet off him giving him the open shot, he can still beat Alston off the dribble. He's that fast.
Furthermore, with his speed, if he took a page out of PP's book and contorted his body a bit more, he could be going to the foul line nearly every time he blew past someone. I'd love to see him drive right at Howard early in the game, draw contact, and get him in foul trouble. It'd take Howard out of the game and seal the Magic's fate.