Jeez, Atom. Quite a return there. So glad it was easily remedied and thank goodness for the medical volunteers. Drastic diet though, eh?
Sounded similar to Funkin after he finished Wanaka, took 6 mugs of very hot soup and 7 blankies to warm him up and he was a proper dehydrated state too...he lost 9lbs in that race, so you're in good company ;)