Unless I'm missing something kida-really big, the take home is to make at-altitude power adjustments slowly and gently, even when planning to descend. Cannot think of a good reason to chop from 93% to idle in one pull. If one needs to descend rapidly, point the SOB down, use speed brakes and reduce power, but gently. Even if one needs to head down quickly, i.e. pressure loss, the last thing you want is loss of one or more pulling gizmos! do it gently, use the speed brake and point it down. It it is still flying, maintain what you've got, slow a bit, point down and consider your options. Except in an RTO situation a zero AGL, I cannot imagine a good reason to chop from high to idle in two seconds. Again, am I missing something?