Time can be of the essence in a Ponzi scheme. The longer a Ponzi scheme persists, the more funds can be lost and the more investors grow, as do the difficulties in tracing those funds for recovery and the hardships to any unwitting beneficiaries required to return the monies at a later date. By the time the curtain is pulled back and the fraud is revealed, the organizers of the Ponzi scheme generally have insufficient funds to return what they took, resulting in a hectic scramble by creditors and victims over the inadequate leftovers that remain.

http://www.nonprofitquarterly.org/policysocial-context/20163-should-charities-be-protected-from-the-claws-of-fraudulent-transfer-laws.html