By LIAM FOX of ABC
After he took a few doses from an asthma puffer, the 74-year-old's head rolled back and he appeared to be on the verge of fainting.
His daughter and official spokeswoman Betha Somare gasped audibly and rushed to his side.
The proceedings came to a halt as several other people crowded around the elderly statesman.
But after a few sips of water Sir Michael laughed off their concerns and told the tribunal he was fit to continue.
The tribunal has been adjourned until Monday.