In law, in general, when there is a final judgment or verdict, one has a year to uncover new evidence. One has to demonstrate why the evidence wasn't presented earlier. See FRCP Rule 60(c). Here, a few months shy of 60 years later, a new theory arises. Their are other threads but they are in "Books" or "History" and I did not want to derail them. The proponent, Paul Landis, was traumatized for this period of time. Time to give it a rest?