He'd undoubtedly have his identity crisis but he wouldn't try to resolve it like he did. He may not be able to resolve it at all. As such, I'm not sure he'd even be able to control Oto even if he wanted to know which he showed no inclination of doing even when he aimed to surpass Orochimaru.
I don't know why you guys are acting like it would be such a huge divergence if Akatsuki killed Orochimaru. It's not like he'd stay dead for long. He'd find some way to be revived through one of his cursed seals. Either Kabuto would revive him the same way Sasuke did in canon, or one of his "escape pod" white snakes (like the one that tried to escape from Itachi but got burned by Amaterasu) would escape and possess a Sound Four member or something.
Technically Orochimaru has never died in the manga, only absorbed or seal, so we don't actually know what would happened if he did. For instance, his curse seal might have
vanished with his death. There's no guarantee he could sneak a white snake away during his murder, and no-one had any intention of reviving Orochimaru until Sasuke came up with the idea for his own reasons.
Had things been different, Orochimaru could have ended up as nothing more than a bad memory.