People, in general, don't know to admit it when they do mistakes. In this case, both did, grido out of ignorance and the phantom counting on the presumed ignorance of any authority. The way people, in general, fight to defend their mistakes is similar. Those with authority show more authority or try to deviate the reasons because "they know better". Those without authority, try to move the masses in their favor, a bit of mercy here and there a bit of heroism and purpose achieved. The person of authority "wins" when "nothing changes", the person without the authority wins when others admit publicly that he/she is right, regardless of what comes next.
I gave it a good thought , and the best way to analyze the matter is to put myself in Grido's place. I am sad to say that i would have acted the same. When _ANYONE_ does something bad, i oftenly punish without talking with that person first. It saves time, but most important it saves potential lies and potential hopes for a punishment that i know it will happen anyway. This apparent ignorance helps me be more strict, and in my eyes that means also fair. I am strongly biased here, I know my ways are not right and they are accepted just because its "my game". I don't know if Grido should have acted similar or not, but i do know he had the option to do so, i cant blame him for using that option, you however can. I do believe that he didn't anticipated the public reaction, and that should be a lesson for him. I also believe that Phantom did something unacceptable too, thats not in question.
The hardest punishement i am capable of is public humiliation. That, for me, is part of a punishment, not a side effect i can ignore.