Quote Originally Posted by Munsu
Which Genjutsu are you reffering to? I don't think that the creation of another dimension is genjutsu and if those other attacks occuring on the dimension are Genjutsu I thought that Sasuke took care of them without problem. I don't see how this supports your premise though even if it were true.

Oro apparently created an actual dimension inside of him, genjutsu is only an illusionary technique if I recall correctly.
I'm not sure if it would be called a ninjutsu instead. They weren't actually physically moved. I took it as them being in within Oro's mind. Similar to Sasuke going inside Naruto and seeing Kyuubi. It supports my premise because it shows Oro did successfully execute a jutsu on him. Sasuke was also poisoned by Oro.

Quote Originally Posted by Munsu
Sasuke didn't seem to have knowledge of how the ritual occurred nor of what the seal actually did to him, so when he wanted to kill Oro he wasn't taking into acount what the seal did to him nor having to fight in another dimension. So, in this new dimension for all we know Sasuke can't kill Orochimaru, we don't know what effects the new dimension may have on Sasuke's body if Orochimaru were to die. When he said he didn't need Oro it was meant as he didn't need his teaching anymore, he never made such a statement after Oro started the ritual.
Not having knowledge of the ritual to me points that he should not allow the ritual to willfully happen. You don't go into a fight not knowing something like that. Unless you're a totally arrogant bastard, which is a possibility, but Sasuke can't be THAT dumb IMO. It's arguable if Sasuke did or didn't know that the seal would hinder him against Oro. I think Kakashi would know from that female ex-disciple (Still can't recall her name) and would tell Sasuke. If not, he would have some clue of it as it knocked him out when he got it. You can't judge what he meant by not needing Oro. You can have your theory though.