You are not wrong at all Celestar,
The only time you would ever work with still air (as far as I am concerned, is at the planning stage).
I will post a more detailed reply later - unfortunately ETOPS is often the subject of lack of knowledge, especially after the latest FAA update.
For now - rest assured, you are correct! BTW - what do 'they' want you to do with the still air plogs? Hopefully not send them out to the flight crew as well?? Cuz that would just be a recipe for disaster - inmagine mixing up the paperwork when you calculate you fuel requirements!
Cheers buddy - hope the share some ETOPS know how soon!