Greenie is obviously not a medical professional, the players were probably suffering from heat exhaustion or minor heat stroke and he used the term, I doubt he was lying.
If anyone had heat stroke they wouldn't have played the second half.
Pretty sure most of us would call someone in good shape, running in the heat, then vomiting heat stroke. So at the time (pre-medical assessment to give the FFA a technicality) Greenie had no reason to think he was wrong.
The FFA are such muppets. Advertisement for coming down to 'Straya to play in the A-League: "Come play in the A League. Sometimes you may play a game where its so hot we need extra drinks breaks and you might throw up from the vicious heat we make you play in, but don't worry, we will have your back. We will deny any wrong doing because despite the heat causing you physical problems, its not heatstroke. So where the bloody hell are ya?"
They want good players, how does a) this, and b) pretending this isnt bad despite what it did to players good for that goal? idiots