Obito didn't control Yagura..

[Simple Math]

im confused

when obito took off his mast, kisame recognized the same guy that was controlling yagura

 

[Menma Senju]

Obito Uchiha is the same age as Kakashi Hatake 30 years old so it kind of make sense as long the author write the chapters of Obito's flashback it would make sense.

 

[The Hidden Shinobi]

Fools, everyone who is saying kishi messed up once again you just don't know how to think for yourselves. Kakashi said zabuza killed all his class mates 11 years before the series. 26 - 11 = 15. When obito was 15 this was a year after the nine tails attack which means he was old enough. Case closed.