This is an interesting question. The phrase "we want to see inspirational skiing" is often used in Canada as well at the high end.....always for the high end runs in L4, and to a lesser extent L3.
From the examiners perspective what we are looking for is who to pass, and who not. Often at that level, many candidates are able to make the moves and show expert technique on easy terrain (blue groomers) but to pass the high levels we ALSO want to see expert technique COMBINED WITH strength. agility and instinct.
At exams the examiners will pick the run, say a gnarly icy bump run.....some cadidates will ski slow, round turns, and show good technique...no mistakes....arms bent 30.7 degrees, knee hip angulation at the desired 163.4 degrees, head slightly cocked outward at 8 percent off center..blah blah blah....you know the type. Hell just read 90percent of posts here. Good technique, but no demonstration of strength, agility or instinct. Result...close but still a fail, not a true expert yet.
Then there is the other guy...who attacks the bumps, shows great technique, speed, but hits some air gets chucked into the backseat, recovers quickly and is back into the rythm, then after a few more great turns at speed, hits another bump, launches big time, lands on the top of another bump and comes down hard, but again skillfully recovers and finishes the run, back in top form. This guy shows the full package, technique, strength, agility and instinct. Result? Pass with flying colours.
Great skiing is not about knees bent at 34degrees, arms out at 150 blah blah...."inspirational" skiing is about just that....the top CSIA and PSIA examiners know that. If you want to be one...they expect you to know that too......ie: show us your best....technique at speed....if it falters abit that is fine...they get chucked too on occasion.
They are not expecting you to ski without mistakes...what they are expecting is that if you do get bent out of shape you can recover...that is an expert....how many times have you seen someone who skiis well, but when they get bent out of shape, say in the bumps...they end up "riding the pony" across the hill until they dumped enough speed to get back into it? Not a true expert.
How to train for it? Easy....when I was training for my L4 our coach would simply look us in the eye and say...."follow me down here....and keep up".