If you actually read the account of the incident, you'll see that Gosder and Tribble are just getting roped in because of who they are, not what they did. Both deny any wrong doing and the cop/bar owner involved is also claiming they're innocent. It was a crowded two-story bar on the 4th of July. The place was filled with potential witnesses. If either guy did anything wrong, it would be all over the Boston media. Instead one lawyer and one slow day at the Globe gives this more attention than it deserves.
UPDATE: I posted my more neutral take at the Fanhouse too.