Hey Caelah thanks for the concern - Ryan was fine in the end but we were very worried about him when his eyes started rolling back. Took him a minute or 2 to come out of it - lucky an old school friend was there with us and has been a GP for 25 years...so he responded very calmly to the situation which reassured all of us!
here is Ryan's youtube link if you would like to see his moves - he's pretty good!
I guess my board probably went back out into the high tide later that night if it wasn't picked up by a passer by on the beach where I left it...