Earlier quoted context omitted.
I think what you are describing might be called 'Weaponized Flow State'. Flow states that arise while [acting, playing music, playing sports, programming] are really hard to generate. You have to develop those skills without "dynamic difficulty setting" that the author refers to. But when your basic skills are enough for you to do well, you can get drawn into a flow state much quicker.
I disagree that these flow states are difficult to generate. While they are extremely more common within designed experiences (such as video games), they can and have been applied with great effect to more "common" tasks, such as acting, playing music, or sports. The very best article I've found on the subject is here: http://www.gamasutra.com/view/feature/166972/cognitive_flow_... Highly recommended reading.
Sort of exception is when everything breaks down at once and I have a ton of stuff to fix/do in emergency style. That's comforting.