Ok..first things first, i see alot of misunderstandings and a bunch of n00bish statements.
ToadSageJiraiya - Naruto and the team went back to the village because they failed their mission. How you ask? After Zetsu appeared and told them the news about Sasuke, they all rush towards the arena where Sasuke and Itachi fought. When team Konoha reach their, it was late and the scent of Sasuke and Tobi/Madara is gone, due to rain. Dont worry, some Mangas should have flash-backs on what is going on so we dont get confuse, they just want us to get curious, thats all.
YaminoSoul - Your predictions are silly but yet, its a possibility. And NO, its not a flash-back when you answered ToadSageJiraiya's question.
drpat - Its not about the leaf really, its about 'Reviving' or 'Revenge'. The main reason Sasuke would attack Konoha is to revive or either revenge for getting rid of the Uchihas. I can tell Itachi will protect Konoha as well, but since Sasuke is the last mortal Uchiha, then might as well support him and also support where your place call 'home'.