Sasuke, plotting a secret plan?

In recent Naruto manga chapter, there was a flashback of a conversation between Sasuke and Uchiha Madara. They were discussing about Sasuke’s real motives and goals, whether Sasuke really is going to stick with crushing Konoha, or otherwise.

Uchiha Madara obviously is trying to dig whether or not Sasuke and Team Falon would betray him and Akatsuki. Or maybe he’s just trying to confirm that his plan is executing right.

Sasuke has been telling Falcon that they are indeed just "using" Akatsuki and Madara. But on the other hand, Madara sure is just using Falcon and Sasuke. So, does this mean that Sasuke is ploting a secret plan with Falcon (or himself) at Madara’s back?

At this point, fans started to speculate that what Sasuke would do is actually to destroy Madara and "save" Konoha, instead of destroying it. And judging from Sasuke’s conversation with Madara in recent manga chapter, there’s a possibility of that. But we never know, cos it’s Sasuke. Sasuke is an emo type of guy, so his emotions could lead him to anything.

So. To "crush" Konoha or to "save" Konoha? Which one is the one?!