Interpretations

There's two ways to read this story. One is that the man was a legitimate threat, and was detained for the reason (which is why I suspect this was released - "See, we were right!"). The other is that the man became a suicide bomber as a result of his experience at Guantanamo Bay.

The same evidence can be read with different conclusions. It depends more on what you were inclined to believe before than on what the story "proves."