Not that I would recommend it to happen, but this could be a case where the Russians are in the middle of the court and shoveling these US-secrets folder around which they have access to, and suddenly they (the Russians) have a 60,000 page box or two to appear with all of Hillary’s emails (including the Top Secret ones). Then they might turn to Mueller’s guy and just say....oh those other firewalled documents that you wouldn’t allow us to see....we’ve already seen them.
:-)