Apparently the actual document has been removed.
I would think that someone that is creative and thinks out side of the box was just told that "this is serious business". This individual probably was very good at their job, and will never perform at their full possibility in the future. Good thing we have "serious" people in EM, because they'll be the first ones to crack when their little plan falls apart in the first 30 seconds.
They simply could have moved the document to reflect it's humorous nature and said something to the effect of "the exercise was used to get individuals to think outside the box with an event that is outside their norm but provides the same end results with respect to responding to large amounts of casualties". Whether or not it was sanctioned or not.