@Morpheus - Your assertion seems to be that the trial was kind of an emotional railroading of the pre-dubs back then. The powers that be knew that they were somewhat in the wrong so they let it go.
Could it also be that since the war was over, they simply wanted to move on to matters with more relevance that retrying a case about war postwar? The Writ would essentially cause them to start all over, going after an organization for something they could no longer be doing after such a monumental war. Was it just time to move on?
I guess what I'm saying is that it's difficult to read intent into the decision to let it go. You may be right, as the other suggestion may be as well. Do you have anything from back then that gets to the motives of letting it go? I'd be interested in seeing writings about why they dropped it.
Regardless, it sure doesn't seem to be the heroic time it was made out to be where they were simply being singled out and unjustly persecuted.
Thanks everyone for the information. It was an interesting time.