A couple of points come to mind.
If the cabin crew had been serving this git grog for the last 3 odd hours, surely they would have known he was two sheets. If so why wasn't this communicated to the skipper. If it was, when was the last time a successful hijack was carried out by a retard drunk?? Especially since enhanced security flight deck doors were installed. Squawking the code for a drunk bashing on a door that could take a decent explosive seems a bit harsh. But then again, I wasn't there, so who am I to judge?