think about this scenario: Tobi beeing the one who holds the strings!!!
I mena think about it: his body has not been found...
he was away...
and the sentence: Pein come here he has arrived...
also the AL asking the person behind what really happend to sasuke and that person is giving informations as if he has seen sasuke and his abilities!!!!!!!!!!!
so...
i say tobi is the man behind everything....the man with the mask.....
greetings