I have to agree with PantLoad here. I assume the use of the words "line check" denote an actual revenue flight on a real aeroplane, not a sim ride. In any case, I would expect an approach of this type to be discontinued in the sim when it became obvious that it was unstable.
The only time I would ever continue a glide approach to touchdown in an airliner would be if I had lost all my engines. And this is coming from a glider pilot...