I don't think the FO will remember a thing about the whole deal.
Yeah, that's hard to say. Some people, in instances of great stress and severe physical trauma, don't remember anything about the event, and others can recall every single specific detail. Brains are weird that way.
I hope he survives, and maybe he'll be able to tell his story. I haven't heard much about his condition other than he was in critical condition and underwent some surgery earlier today.
I feel so bad for him. I couldn't imagine being in his position, the only survivor.