its good to be back...i see somethings dont change (kenshiro's still going at it with lame "sasgay" BS)
man...there is too much neji hate here [img]i/expressions/face-icon-small-sad.gif[/img]

anyways, on topic:
i think its safe to assume that this uchiha member is part of sasuke and itachis family, otherwise no one could defeat this person. and it is very possible that the 3rd MS user is a member of the akatsuki. the member os the akatsuki may not have complete contact with the two members at the top...kind of like baroque works from one piece, and the leaders idenity could be a mystery