Im not a lawyer, but have lived the Flynn experience (civil not criminal) both with DOJ and in the Appellate Court of NY. When one sees the process up close, it is easy relate to every moment of agony Flynn suffered.
Ive not had a chance to research it really, but I seem to recall a thread that showed some e-mails and possibly tests between Flynns lawyers and the prosecutors, where they are discussing an exculpatory piece of evidence that was (seemingly) never provided to Flynn, or the court.