He's an officer of the court and he does not get to say "whatever he wants" to a jury. If the judge does not slap this clown hard, the judge needs slapped around too.
Actually, he DOES get to say whatever he wants. He was not in court, but in an elevator. Your first amendment rights don't end just because you are an attorney in a courthouse elevator talking bad about jurors when you lost a case.
He should be spending more time wondering why he didn't win, but absent that, he can say whatever he wants. I guess the judge can chastize him or say whatever he wants to him, but if he was fined, that's wrong. Judges don't get to sanction speech they don't like.