Earlier quoted context omitted.
(a) Because the people who pulled off the attack are stupid. (b) Because the people who pulled off the attack somehow lost access after getting the account but before archiving all the mail, and so made up the good stuff. (c) Because the people who pulled off the attack are very smart, and are going to slow-drip this out to the media over the next month. I know where my bet's at now.
If the people who pulled off this attack are very smart, then they'll be shutting up about it. The US Secret Service has a lot of resources and a pretty limited mission statement. It's not a good idea to attract their attention.
Trivia question: which law enforcement agency was primarily responsible for responding to computer incidents throughout the 80s and 90s?