I condemn the act as wrong, but I do not think that act in that circumstance defines a person's character (alignment), because, in the cold light of rationality, there is no decent alternative. However, it is an act which makes that person corrupted. They are compromised. A good person in haunted by such deeds, and I think Jack is decidedly one weary guy who is sick of his job. That's one thing I see a lot of folks not getting. He isn't some ultra-lawful lapdog who loves what he's doing for a living. He wanted to stay out, but his conscience sucked him back in, reluctantly.