Thanks Chuck, that was indeed not the intend of the demo. I may have not explained myself clearly.
Douglas, the demo was performed from a normal, stabilized ILS (or any other stabilized approach with a glide of around 3 degrees). In the "G/A without power" I should have said that there was no power added above the normal power on the approach.
The impact on the trainees was normally rather profound and next time they'd certainly have their pitch correct