Here's one of those really tough positions. I regularly quote the phrase that "the only thing wrong with tainted money is there 'taint enough of it." Normally I apply this phrase when referencing taking money from questionable sources. So what's more questionable of a source than Madoff? Especially when a recipient knows (or should have known) that the rewards were suspicious.
Getting Mr. Madoff's money back is the job of Irving Picard who is seeking this money from one of the "not-so-innocent" recipients of Madoff, Jewish Association for the Aged according to the Wall Street Journal. I believe that Mr. Picard will have to make the case that the recipient board of the Association guessed something was not right or at least should have known the returns were too good to be true. And as a consequence, could have to give the not-real profits back.
Of course Mr. Picard's job is doubly icky given he is trying to take something back from an organization which is trying to use the money for a good cause. But as we are learning, using ill-gained money for a good cause doesn't always wipe-away the illness of the money.