If he was having a SC crisis, he would have found it hard to walk, breathe & been in pain. On CCTV, he looked OK, not like he was having a medical emergencyHe doesn't seem to have a towel or anything with him or a change of clothes. Not sure either how many taxi's would be happy letting someone sit in the back for 45 mins sopping wet for the ride back. He must surely also know with the temperature barely above zero going for a wild dip with no one around could put him in serious danger with his Sickle Cell? I wonder if it's pathologically possible to determine if he was likely having a sickle cell crisis at around the time of death which could explain how he overcame the urge to surface.