let's give hatake kakashi a chance. while i was going over the manga to prove him wrong, i realized that there is also another possible candidate for obito: the best friend of kakashi who was actually a loser uchiha that eventually changed kakashi into the great person that he is today but for some reason he himself chnged but into a bad person and now is the leader of akatsuki... obito!
look, the guy that was hanging down also had one eye that resembled a sharingan. since only one eye is shown it's safe to assume that this is obito. i mean, it's pretty much set that kakashi is gonna get obito's LEFT eye... and what do you know we see this guy's (obito's) RIGHT eye only. it has to be him.
right now, my theory about the upside down guy is has the best chance of being true because of the facts i stated. i'm sticking by this theory.