The detainees held under a security certificate have the certifcate reviewed regulary by the court issuing the order, or an appellate court on appeal, or on motion before the court by lawyers for the accused. As far as I know, the detainees are treated well, better than most prisoners in the system, and they have access to all the lawyers they could possibly need. The alternative is a plane flight to Bulgaria for rendition- as far as I'm concerned they can take their pick.
Anyway, the Supreme Court is set to rule on the Charter validity of the security certificate system in a few weeks. All bets are that they will rule the process invalid, and then the civil lawsuits will begin. Another present to lawyers courtesy of the Chretien era. They are not going to decline the opportunity to make a few bucks on this one.
Cheers,