11 year olds panic during times of stress. Everyone does.OK, I see what you're getting at. Kids are also know for not being the best communicators in the world. Although in this length of time, SURELY an 11 year old would be able to get the point across that "Uh well I didn't mean he was IN IT, when it went up."
I'm more inclined to think he's flat lying or just totally mistaken (saw the brother go in, looked away, didn't see the brother get out before lift off) as opposed to being totally unable to clarify his story.
Why don't you water board him so we can learn the truth?