My guess is at the Phoenix meeting with AG, Bill Clinton made a deal with AG to confess to the shenanigans with the email and the Clinton Crime Foundation if AG lets Hitlery and daughter go free. The Clinton Crime foundation would be tried after Hillary is elected. Just a guess, but who knows. Maybe a few murders are included in the confession.
With the high visibility of Sidney Blumenthal the last few days, maybe the fbi turned him and Bill decided to make a deal because Sid knows a lot about the Clintons and knows where the bodies are buried.