OK...so I'm the shooter and I just realized that I holstered with the safety off; HOWEVER, before I can draw my gun again to put the safety on, the RO yells out "Stop - Your DQ'ed for holster a gun without the safety.."???? .....this in my opinion is a major DICK move because it does not give the shooter the opportunity to fix the problem.
That gun in the holster with the safety off is no more unsafe than the gun in his hand two seconds before. I think the guy should have the opportunity to fix the problem.
You can not undo a safety violation. You can not unbreak the 180, so how can you undo your DQ action? You have it pointed out, take it like a man, help RO/paste for the day and remember to put the safety on. We should not even think of a rule book revision that eases up on any safety rule we have.