Pilot DAR
Once you're sure you need them, why would you un-need them!
I am certainly not advocating 'modulating' flaps on approach.
What I was trying to say was that there may be a situation where there is benefit in raising flaps on approach.
Let us consider the PFL, the pilot is now flying a glider, he is manouvering for a field or some suitable landing spot, but he makes an error and selects flap too early increasing his rate of descent and it is clear he can no longer reach the selected area. What the examiner was trying to get me to understand was that in that situation, raising flap to a lesser angle will reduce the drag (albeit with an initial slight sink) but the overall result is a reduction in rate of descent which means you can glide a greater distance.
The learning point was on 'not saying never raise flap' but teach the student to understand what is happening and be aware there may be a situation when it is a viable option, but certainly not to use it as a modulating system as a matter of course.
Hope this clarifies what I was trying to say