Thoughts on THAT exchange in SPN 4.14

Why is it these boys can't have an honest conversation when they're both sober and not under some magical influence? Their exchange in 4.14 had the feel of a set-piece, it didn't fit the context very well. But it was stuff that needed to be said, on both sides.

( Cut for spoilers )

I may not be able to respond to comments for a day or two. Also, PLEASE no spoilers in comments for episodes after this one. Not even vague ones.