She wasn't DQd for "unzipping a case". It was for sweeping her hand while removing the gun from the case.
None of the actions mentioned above are DQs under the rules in Chapter 10.
Sweeping the body is specifically a DQ if done during a course of fire (10.5.5).
If done outside the COF (e.g., in a Safety Area), what rule does it come under? General violation of safety rules (10.3.1), like Cooper's rules #1 and #2? Unsafe gun handling?
Myself, I believe it's inherently unsafe to sweep yourself, and it's not hard to keep from doing it. Are you going to have two (or more) different safety rules, for different occasions? Are you sure it's unloaded? No mag, but one in the chamber? Are you so confident that you'd point the gun at yourself and pull the trigger? Really?