I'm no expert on freediving (except to shake my head and think 'nutters' - but then again I think that about a lot of things...) but I doubt that this fella was training in static apnea. No-one had any idea why he was unconscious at the bottom of the pool, which is the other reason why he needed to go to hospital, something that you point out. Have you heard of immersion syndrome, where you faint, and can die coming out of a long stay in water? That's another strange one - Makes me think those people who man lifeboats really must know their stuff.