I think some players and attorneys should take this to the courts. The nba doesn't have freedom of speech when it comes to officials? Isn't that unconstitutional?
Do you have the freedom of speech to call a fellow employee a criminal in the press without consequences? The first amendment means Congress can't restrict freedom of speech (beyond certain areas of exception); it has nothing to do with what private organizations can regulate (again, with some exceptions).
For the topic, I agree with others who say that if this is bigger than Donaghy, why didn't he try to sell those refs out to save his own skin, or at least sell some more books? The refs in general can be stubborn, self-centered, and malicious, but I don't think they're actively criminal.