A few thoughts:
1. Regarding the Freeport case cited above: The NBOME is a not for profit association, not a government body or agency or a public university. The First Amendment only prohibits governmental action that inhibits free speech. As a result, any argument about first amendment rights will fail. You would need a different argument for any successful lawsuit.
2. If the the NBOME recorded the meeting as someone mentioned above, it did so with the intent that the NBOME would control whether or not the contents of the meeting would be released - not the other participants. In all likelihood, neither the NBOME or the "dear doctor" gave anyone permission to record and publish the meeting. I know many people videotape almost everything and upload it - but in two party states, the legality of this can be a complicated matter highly dependent on specific facts. Just because objections aren't raised all of the time doesn't mean an objection can't be made.
3. Regarding the story that the Illinois Supreme Court overturned the state wiretap law: What wasn't posted was that within weeks, the Illinois Legislature passed a revised law to address the Court's concern. (The old law made taping law enforcement officers in public illegal. The new law allows taping of officers in public, but as an offset creates some exceptions to the requirements for law enforcement to obtain warrants for wire tapping citizens. It does not otherwise change the two party consent rule.)
4. As far as schools throwing around "professionalism" charges, tread carefully. Courts rarely get involved in school grading disputes or the professional opinions of licensing boards. They only get involved if a school or licensing body violates its own "due process" procedures - they are hesitant to substitute their judgement for that of the faculty or licensing board.
As a soon to be MD, I have no dog in this fight, but I feel for my "Bone Wizard Brethren", just be careful. I'm not a lawyer, but a family member has been involved a couple of times with the intricacies of two party consent. His words of advise: It's not as black and white as you think; the outcome is highly fact specific; just because everyone does it, is not an excuse; I can show you how to make 6 figures disappear quickly.