I don't think that it would be someone (or something) traveling back from the future to sabotage the LHC. Rather, it's possible that the LHC, if fully operation

I don't think that it would be someone (or something) traveling back from the future to sabotage the LHC. Rather, it's possible that the LHC, if fully operational, would destroy the universe, and we just happen to live in one of many universes in which hardware failures and birds dropping baguettes have prevented it from doing so.