Robert, the issue at hand really should not be "justice". The purpose of any accident investigation should be to prevent such an occurance from happening again.
I truly feel for the families of the passengers on the GOL 737, however the fact remains that this was an unfortunate ACCIDENT. Unless gross negligence is shown, with the intent to cause harm, criminal prosecution is unwarranted and sets dangerous precedence.
Sometimes, there are no "culprits", but instead a terrible sequence of events that all contributed to the accident.