The sim is fixed, but the pictures on the screen do move, so they hopefully introduced some digital model of the physical aircraft.
I read somewhere that they use it to plug in the real boxes, so they can see how the automation works.
As it is only a shell mimicking the upper half of the 737 nose, how do they replicate the efforts, cable lag and springiness of the manual trim linkage ? Chances are that these are as unrealistic as in an ordinary simulator.
Of course, crew sitting comfortably in a fixed cabin will easily run the upset check-lists. And yet, there are those rumors of "having a hard time".
As for seeing a video...unless it is sneaked out, well...