no he can't do that.. he would lose more chakra...masterbating...............
Kakashi will always find a way to fodderize Obito U_U It's a tradition now.do you remember the pain invasion arc, when kakashi died and his father was there siting by the fire(which btw was very weird)...
im thinking he is doing the same, its hatake style maybe to sit by the fire side...
lets face it even if he was to return he cant do shiiit...