I suddenly feel very ominous about Sakura's vow to find Sasuke alone. I was thinking about it in class (instead of doing work >.>;;) and I think after this arc, she may go off to find Sasuke on her own.
Think about it:
Naruto is out of commission. Snakey Jackson is going for Sasuke's body like... now. I think there's a high probability that Sakura will leave Naruto with Yamato or in the hospital and go to find Sasuke on her own. (maybe she'll take Kakashi? O.o)
(Of course, I have no doubt that Naruto will chase after her when he gets better)
That's going off just what we have no. Sai could have something nasty up his sleeve and throw the whole thing into chaos.
I've been thinking about Smiter-kun's idea of Danzou offering an attack on Konoha to Orochimaru. If Sasuke takes part in this attack, there is no way he's coming back. Not even bringing back Oro's head will redeem himself.
Right now, there's still a chance (not that I want him to come back or anything, he can stay molested for all I care). I mean, no one died on Sasuke Retrieval Mission and I doubt Naruto is going to press charges. But if he attacks Konoha directly, Naruto and Sakura are going to have to give up on their promise. (or Sasuke will face the death penalty at least. Yay! Attack Konoha, Sasuke! )