I think what you said is particularly effective when the word reputation comes in to play as it does in this case: Royse777 reputation
If any member of the forum was in a situation such as this, they should try to post as much evidence as possible to show they were innocent (or post enough evidence to demonstrate they were at the very least culpable by minimal involvement because they were not involved in the technical, financial decision making and business side of running the website).
What breach of what code takes place when a scam is involved? Once a scam has taken place there is no need for anybody to withhold PMs unless there is sensitive information stated within them but still can be redacted before making it public. If I was scammed by someone in this forum which resulted in losses to third parties that put their trust in me, I would do exactly what you just stated FatFork, I would publish the PMs trying to explain to the wider forum what happened because it would not be unethical to post them in those circumstances.
Regarding other comments here about PMs, I do not know why Royse777 or any other member in her situation would release PMs to a select few members and not the whole forum after such a big debacle but there might be important factors behind it. Having said that, when it comes to things such as these, personally I am highly sceptical by nature and am not easily convinced nor impressed. As I said, maybe there were important thing Royse77 wanted to keep away from a wider audience but why show it to a select few and what was to gain from hiding it from the rest of the community?
I can see several members here that have been highly critical of Royse777 and have very little sympathy for her because of the manner in which she conducted herself in this Bitlucy drama therefore what was the reason she decided to not send identical PMs to those members? Or better still, why not post identical information openly in the forum?
As for those that seem to claiming the Royse777 and Bitlucy relationship was far more than has been stated, I would say that I still have seen zero evidence to suggest that Royse777 intended to scam therefore I disagree with the conspiracy theorists who probably have their own agenda to make those claims against her... but by making certain members privy to certain information is something that makes this drama look even more of a mess than it already is and that sort of behaviour something I would never advocate.
we still haven't seen screenshots or chat logs between him/her and the BitLucy CEO
Sharing forum PMs is a big no-go, even when it's about bad shit. There's always someone going to complain that it should remain private. I don't see why chat logs would be any different.
I don't see it that way. Sharing PMs and chat logs as evidence in trades that go wrong or disputes between peers has been the norm for some time.
[One smart guy even created a bot to publish PMs automatically. ] 
Anyway, as I said, this is something that I would probably do in such a situation if my reputation were at stake. Royes777 must decide for himself in this situation. Of course, any private information can be easily censored.