@Kit-Kat and
Frenzy - At this point, I don't even expect Caver/writers/the entire team to explain as to how Cas's vessel hasn't disintegrated yet. I hope they do it atleast sometime this season and not just brush it off never to explain it like its no big deal. But honestly, I doubt if they will and that's one good reason to be pissed. I understand.
But like I said earlier, I'm going to concentrate on whatever little good comes out of the episode because there's too much crap around, both in the episodes and reality in general.
Those posts I posed from tumblr highlight some of the good this episode offered, you guys might want to read it.