I understand what you're saying, but that's calm, logical thinking in unimaginably shocking circumstances that we can only imagine.
Maybe being interviewed by LE was a little too close to some issues growing up with LE dad?
For some people, lying is a learned response, not even thought about while they're doing it. It's like a reflex. I've seen this exactly; son and super critical father. The son lied about inconsequential things even as an adult, but only when questioned, and even about innocuous things. When left to speak on his own, no lies - only when asked questions. He was so used to be criticized, the kneejerk reaction was to lie because there was a shield. A lie because to tell anything near what he was really thinking or feeling would mean he would be criticized. Nobody likes to be told their feelings are wrong or inappropriate. There's no emotional investment in a lie, but to tell someone what you're thinking and feeling and then be told they're wrong? It breaks my heart.
I can only imagine and speculate and project what he was thinking in that situation, but I can pretty much guarantee that it was from an emotional place of feeling guilty or attacked. Learned.
ETA: to kammiemc: Well, for cornssake, I just realized that my first sentence repeated what you said about understanding each other and I swear it wasn't intentional! Please don't think I was being sarcastic
It was an honest statement, lol!