Since when did it state that Sasuke commanded Oro to go and heal Tsunade? If you can show evidence of that, I will reconsider my opinion.
you think oro would go by himself? he's not that good yet.
Oro was open about his current goals: seeing what sasuke will do.
Oro isn't that good of a person to volunteer going.
and the point is still there: if Oro wanted to save them and sasuke was evil, he wouldn't have let him go.
still proving that sasuke's not evil.