Karin is not saved yet. It's up to Sakura and Kishi for that.
I think that in the interview, Kishi said someone in Team Hawk is gonna get killed by Sasuke or something, and that it will affect a lot the view of the other 2.
If Karin dies here, Sasuke can as well lie to Juugo and Suigetsu about her death, and inculping Danzo or Team 7.
Killing Juugo for his flesh and power would make more sense for me. I don't want to raise the old debate about Sasuke's favouritism, but I don't think EMS would be enough against a Naruto at full potential (Kyubi + SM). Sasuke eventually needs another dirty hax.
But that's way over the current chapter, sorry ^^