How do we even know that even a shred of this story is true? Can any of it be verified? It sounds like they are trying to shake down the German taxpayer to save the Euro using the old guilt question of WWII. Enough already!
Always good to be suspicious about this sort of thing, but it seems a researcher on WWII U-boats noticed these overlooked transcripts, and has been working on a book, since 2001.
Some of the transcripts were in British archives and many were in Washington, DC.
http://www.amazon.com/Soldaten-On-Fighting-Killing-Dying/dp/0307958124