Don't ever recall saying I did know? Only that I heard a rumour that I hadn't verified, and it sounds like all the other responses are just as uncertain."I've heard mention..." clarifies nothing and in no way supports your claim that I "got" my answer.
You could just admit you don't know...
I gave a speculative answer; makes sense to me that if trading for a loss flips the influence effect of normal market sales, it'd do the same for black market... I've certainly had anecdotal experiences to back that. If that's not the answer you want to hear, fine. But don't shoot the messenger.