What is the distinction between public and allows public guest use without registration? Yes it's MIT's network, but they were basically allowing public access.
Being pressured with multiple years in prison, 13 felonies and a 7 figure defense cost is a difficult problem to face. Even if your lawyer tells you 30 years in prison is not going to happen and worst case you'll be in prison for a year -- Even if he wasn't actually facing it - he was still being pressured with it (that's essentially the purpose of stringing together multiple charges for a plea).