This honestly doesn't do much harm to the forums....I mean if everyone started double posting hell yeah it would flood it up, but if an admin double-post within a minutes time I honestly don't think he is spamming it up, or causing much harm.
Yes, infraction should be taken place for breaking the rules, but no harm was really done.
I think your just complaining just to complain.
If it was that serious of an issue, he'd be demoted by now.