Sasuke was ready to die for a
chance for revenge - he was going to offer his body to him- Oro taking over a body meant that person being dead. Trying to stop your friend from killing himself! of course it was such a hypocritical and evil act!!
Ignore the fact that Sasuke had chosen death in his zeal for revenge. Whether Itachi lost or won to oro afterwards, Sasuke would have been gone. If Naruto and company didn't fight tooth and nail to stop him, Sasuke would have been met the fate that guy Genyumary met in the link below:
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The fights delayed his arrival to Oro's hideout. So Oro had to take over another body and wait three years before he could do it again. Those three years were crucial for Sasuke getting stronger and being able to subdue Oro next time he tried that. But nope, evil the hypocritical bunch of them, all ensured that Sasuke gets to live 3 more years at least years and be strong enough to fight back Oro.
Neither Shikamaru nor Naruto acted that crazy. If they did I would expect for their "friends" to point out the problems to them and try to stop them.
Sure. Konoha should have wrapped him and sent to Oro faster and made sure Sasuke was dead and passed on his revenge to Oro to fulfill. And of course we would get to see what Oro with sharingan could do. He would probably still lose to Itachi... but could copy a lot of techs faster so...dunno .. what a lost opportunity!.

'Would have saved us all the pairing fights for SS too.