Don't want to rain on anybody's parade,
but this guy was one of those spirited away by rendition and tortured. If the torture extracted his confession, and he did not do it, then there is an excellent chance that the real perpetrator is going to get away.
There is no doubt that he is a bad actor who needs to be put away, but I heard on the news that he confessed to many things, including the beheading of Pearle, and planning 911. So many confessions under duress makes me suspect that he made the admissions in order to stop the mistreatment. If all confessions are accepted, then cases against others may be seriously compromised, but that's what happens with torture, and is the main reason it doesn't work. Aside from the moral, and even Biblical, reasons not to torture, the practical reason also applies.
Meanwhile, I am glad he is in custody, whether or not his admission about the Cole is true.