Holy crap. Some reporter at ABCnews.com contacted the FCC, and they put out a statement saying people should not try to disrupt the AT&T network:

“Threats of this nature are serious and we caution the public to use common sense and good judgment when accessing the Internet from their commercial mobile devices,” Jamie Barnett, chief of FCC’s public safety and homeland security bureau, said in a statement. “To purposely try to disrupt or negatively impact a network with ill-intent is irresponsible and presents a significant public safety concern.”

Cult of Mac re-reports it here.