I personally wouldn't risk playing with the frauds, they'll outplay you in this. Also, with the Ponzi Scheme, you never know at which level of the pyramid you are, what if your funds will be used to sustain the situated higher up investors, but there won't be enough for you?

And even if you get your money and then belt off, think: who will you benefit from? The poor naive people, who had fallen for the scam, wouldn't that bother you?

And this
might not work, as the organizers of such schemes usually take full control of your investments, otherwise, they can't maintain the system and lure new people.