Quote Originally Posted by chet_chetty
Either way I think Itachi wanted and forced Oro to come out so he could cleanse Sasuke's consciousness of Oro.
Since he said so in the manga I suppose you are right

Oro wasn't 100% in this fight, why would he even be? constant struggle with Sasuke to come out, crap body, doesn't sound like an extremely good shape, does it? :P