I doubt Sasuke would return, after even all the effort by the leaf team (Which I believe that they(th leaf's) still would be able to kick all of the sound's azz). However, Sasuke would still runaway after that. He'll probably say a few words to Naruto like "Don't worry, Everything is in hand".

THen maybe there would be a jump in the timeline, maybe 5 years or so, when finally Oro wants to take over Sasuke's body, Sasuke would have learned enough from Oro and finally kills Oro and the rest of the Sound clan?