I googled the question and the first review of the episode that I found was that while it seems worrying that they made the episode seem really bleak, that perhaps they were simply poking fun at other major shows doing the same thing, having ultra dramatic cliffhangers only to end up going right back to business at the start of the next season or some such. On the other hand Book of Mormon is doing really well, and is expected to sweep the Tonys, so maybe, maybe.