I think this is the guy, but I am not sure. Instead of having read something, perhaps it was a TV news segment.
Ackman is working both sides of the street, short selling the stock and at the same time pushing the investigation with the Feds to make his short position viable.
Unethical at best and at worst criminal. But that’s just my opinion.
He made a bet against them. But, any ‘profit’ he will make on the short he will donate to charity. Mr. Ackman just hates the idea of a non .gov pyramid scheme.