"Those that sacrifice freedom for safety deserve neither" - I'm paraphrasing a bit, but the Franklin message is the same.
Your ranting is the same sort of ranting that McCarthy and his cronies gave us in the 50's. The founding fathers built the Constitution in such a way as to deal with this sort of crisis. No, they did not forsee terrorists, but they did forsee sedition and rebelious persons who would act in a way contrary to the interest of the nation as a whole. They forsaw traitors, and they developed a way to deal with them.
A charge of treason could easily be brought against Mr. Padilla. The associated delays would tie his butt up in jail for many moons while the lawyers argued about it. A simultaneous contempt of court charge would take care of the search for information that the government is using him for. If we don't do this properly, it will put us all at risk. Not only that, if we continue down this path, the bad guys have already won a round. It becomes a matter of winning the war, but at what cost? We can win this without compromising our liberties, our principles or our freedom. My biggest question is do we want to? To look back at your answer, I can safely say that you don't.