..without doing anything to undo what was done in the movie.
Knowing what we know about the fate of Romulus as the catalyst to Nero's actions(Spock beign unable to stabilize the supernova in time), all that need be done is to forewarm Romulus of it's fate before it's destroyed, which could happen very easily considering that the knowledge of it's fate is known by Old Spock,Young Spock,Young Kirk, and likely the past Federation.Not only would this likely keep Nero from interferign in the past in the first place but would restore most of the original future timeline and Vulcan in the process.
I'm not saying that SHOULD happen, but it easily could be explained away without much hulabuloo if they chose to go that route.
Knowing what we know about the fate of Romulus as the catalyst to Nero's actions(Spock beign unable to stabilize the supernova in time), all that need be done is to forewarm Romulus of it's fate before it's destroyed, which could happen very easily considering that the knowledge of it's fate is known by Old Spock,Young Spock,Young Kirk, and likely the past Federation.Not only would this likely keep Nero from interferign in the past in the first place but would restore most of the original future timeline and Vulcan in the process.
I'm not saying that SHOULD happen, but it easily could be explained away without much hulabuloo if they chose to go that route.