I would imagine that Orgeron learned a lot from his experience at Ole Miss not to mention he had more talent at USC than he did at Ole Miss as well.
I know that Nick Saban thought he was pretty good and took some heat for hiring him and it has turned out pretty well.
I don't care if you have USC talent if you are on probation like USC was they were going to struggle no matter what. Which should be pretty sobering for Ole Miss.