As far as I know, the only team that is officially disbanded is Team Skull, and the Aether Foundation becomes good again. Whereas other villains realize they were wrong specifically about their legendary scheme and don't actually stop/disband the team. Are there others that do this and I just forgot/haven't played the game?
Yes, there are teams so saw the error of their ways. So teams/team leaders being
Well, that is all!
Hope I helped!