Corsi has been the subject of a government Witch Hunt for some time now. My guess is that this "retraction" has something to do with that case, though I have no facts or independent corroboration to that effect.
Wow they are doing whatever with whoever will role over to try and get this Man
That would be my guess too. The topic of Seth Rich is extremely sensitive for many of the swamp creatures.. more so than talk of FISA abuses, fake dossiers, etc. Nobody dares to even mention Rich.
I personally believe Seth was killed by people in government, and not just DNC contractors. I think the FBI or someone linked to the DOJ performed that task at the request of Hillary's people.
Too many high level people know who did what re: Seth Rich. They're all scared to death that someone's going to accidentally revive interest in the case and do more digging.
Fighting accustions of FISA abuse, etc. is easy... most Americans don't have a clue about what's legal and what's not. But, accessory to murder... that's one everyone can understand. Convictions could be quite easy.