Of course they go on Jihad! They were held in prison for years on no charges with no means to challenge their imprisonment, tortured, and given no fair way to defend themselves against charges that they weren't allow to know.

A lot of these guys were turned in to the US forces in exchange for bounties by their neighbors who were settling old scores.

Imagine you're sitting at home watching a football game and it turns out the guy down the street who keeps complaining that you don't cut your lawn enough called Homeland Security and got $10,000 for telling them that you are a terrorist. So the FBI knocks down the door, arrests you, threatens your family, wisks you away to an airport and flies you to Burma where they hand you off to the authorities and are taken to prison. Then a Burmese Jack Bauer tortures you continually asking you, "Where's George? How much did he pay you? When did you decide to do it?" When you say you don't know who George is, he knocks your chair over and kicks you in the face. When you get to some hearing you ask why you are being imprisoned, they say they can't tell you because its classified. This goes on for 7 years. Your daughter gets critically injured in a car accident and then dies before you have a chance to see her again. Your house gets foreclosed on since your wife can't make the payments on one income and can't get credit because you haven't paid your bills for 7 years and won't contact the creditors to make alternate arrangement. So your family ends up on the street your wife becomes a prostitute to feed herself and the remaining kids and gets hooked on smack and ODs and dies in an alley just after servicing a john. Then one day, the Burmese government says, you're free to go - no charges, no apology. You sue the Bumese government for wrongful imprisonment, but it gets thrown out because they were doing their job. You're stuck in Burma because you have no passport and there's no US embassy or consulate in the country.

Now when you join a Burmese resistance army to get those guys who locked you up and tortured you for 7 years and destroyed your life and caused the desitution/death of your immediate family, you get some logically handicapped self-righteous jackass saying, "See, he was a terrorist threat before we captured him since he went right back to it when he was released."