Well you have too see it from Sasuke perspective and if you read the chapter carefully, he blames Konoha for everything. Sasuke does not care if what Konoha did was right or wrong. He only cares about that his family and happy childhood was taken from him by Konoha.Also Konoha manipulated his brother into killing the Uchiha clan when he hated to kill. Then from Sasuke perspective Konoha is to blamed that he lost his bond with his older brother, one that meant everything to him.
Sasuke wants revenge on Konoha for ruining his life, he does not care if Madara is using him for his own purpose as long he is willing to help him.
So yes Sasuke is very manipulable when he is gets emotional.