XXX,
One swallow does not a summer make and a comment or conversation such as that is not a smoking gun.
In my experience the potential threat or error that you are worried about is less likely to be the one that kills you. I'm not saying you're wrong, but I would find it very surprising considering (as others have stated) his military background.
I am trying desperately to avoid saying "let the ATSB work it out and stop speculating"