Your unverifiable anecdote doesn't hold much weight, I'm afraid. But do you really believe random-guy calling the FBI should warrant as much attention as multi-national financial institution reporting a potential crime?
People are complaining as if GS putting the FBI on people is rampant. As far as I'm aware it has happened this once (though I'm open to other tales) and an over-zealous investigator tried to make a name for himself and messed it up royally.
I agree, what they did to this poor fellow is disgraceful, but let's not pretend that the justice system doesn't have a habit of railroading people when they desire a suspect. That's the real tragedy.