Not only was it tin-foil but it was made in the late 1980s and nearly all of the allegations made in that program, and the A&E move, were proved to be false because Soviet divers had salvaged the cockpit flight recorder and had conducted their own investigation and all of this became open when the USSR fell apart.
You can find an excellent analysis from Air Force Magazine in November 1991, showing how long ago the facts got out here:
http://www.jamesoberg.com/af-mag-kal.doc (MS Word Format)