Your changing the subject.
Adding to Daniels reply, didn't the government (GW himself) tell us Guantanamo prisoners were the worst of the worst just like your description "the latest knicker bomber…a non-citizen terrorist who had 253 witnesses to his crime"? One important part of the trial is that it should be public. Wouldn't we have freed those who should never have been taken prisoner in the first place is the truth had been made public. "God" I hope so!
I as far as I can tell, we held some prisoners simply to save GW the embarrassment of admitting a mistake! Again - yes trials for those prisoners would have helped!