Note that payb.tc is citing emotional distress as the reason for the deletions.

More likely is that he and his ilk feel that they can no longer control the message in here and are consolidating and shutting up. This follows pirate's pattern and incidentally closely matches prior ponzi operator behavior.
http://web.archive.org/web/20091026234156/http://geocities.com/currintrading/Some approaches (to be used in phases or in combination):
I decided not to respond on the forums. I knew that I would quickly be asked for proof of CT's legitimacy, and I knew that I would have no investors to defend me. Instead, I decided to let the forum thread die.
If I was going to use the forums for my own advantage, I would need to find a way of neutralizing the forum skeptics. For the foregoing reasons, it would not be possible to win them over, but if I could shut them up for a long enough period, I might be able to persuade ordinary readers of the forums to invest.
Using the pretext of a lottery, I could draft all of my investors into an army and unleash them upon the forums--or at least one forum thread. Once again, my phantom team proved useful.
On threat-flooding:
The skeptics were soon suffocated. Investors poured into the thread constantly. Even when one skeptic showed up to make a particularly thorough and blistering denunciation of my pyramid scheme, it was futile. His post was buried by all of the positive ones, and his post was lost among the several pages of replies that soon stacked up. My army and I were triumphant.
And much, much more.
Really, there is much in common with this document:
http://cryptome.org/2012/07/gent-forum-spies.htm