This is a mere sideshow. The FBI has got the ‘deleted’ emails, and is reading them.
Except that this Blackberry usage from within a secure area is a separate security violation. They inquired if it could be done — were told maybe and then NO, but they did it anyway.
This is like taking a Radio Shack walkie talkie into the most secure areas in the State Department and defeating that perimeter security 24/7 for years.