Well, the judge can always reject the U.S. Attorney's recommendation. What do the Federal Sentencing Guidelines say about this type of case?
Unless someone else put secret documents having to do with National Security into their underware, I don't believe there has been this "type of case" before.
If the plea is based on misrepresentations, and it is based on false information, the prosecutor can recind the deal.
If the Judge thinks there is more, the judge can reject the deal and ask for more information.