I think that goes without saying. You can't fix stupid. You can, however, mitigate the opportunity for stupid. And, I would argue, anyone who is a Match Director, Rule writer/implementer, COF designer, or RO/SO volunteers to take on the responsibility to mitigate stupid to one degree or another.
Which brings up the question at hand, which is whether or not a COF or a set of rules for action competition shooting should require (or even allow, for that matter) holstering on the clock. Even if the event (which I intentionally left vague) didn't fit the parameters of the question, the fact is that the codified rules for the "association" allow/encourage it and other events and stages shot under those rules require/encourage/allow it.
For example, on the stage below, is there a place for the shooter to safely dump the pistol? Does the COF not appear to require the shooter to holster on the clock?
And, perhaps more subjectively, is there any reason the stage could not have been arranged such that the pistol portion was last, thereby eliminating the issue altogether?
(it should probably also be noted that the shooter apparently has a holstered pistol while shooting from prone, further negating the argument that "3GN does it" since that would be in violation of the 3GN rules)
http://youtu.be/UTTA7xoar-o
http://youtu.be/xEq29CIutxc