The end of this case is reported here, Hat tips to David and Polarbear1605.

Some controversy will still exist as to whether the Rule of Law (a domestic US criminal prosecution) should have been employed in this case. Whether that be so or not, the Rule of Law (here the basic constitutional right of a US citizen not to be convicted by use of statements - here largely exculpatory - which were given immunity) was affirmed and set the defendants free.

Regards to all who contributed to this thread

Mike