What if one of the regrettable things Castiel mentioned was a deal with Crowley?
That's where my mind went with that spoiler too. I am a little disappointed since I want the ass-getting to be real ass-getting, not just deal-sealing. But as long as someone macks on Cas, I guess I'll be okay. oh god i want it.

I bet Ruby and Alastair and Lilith are throwing the ill parties down in Purgatory. I bet they invite Uriel, who resists because he's uptight, but then he joins in because a party is a party. AUGH, I want Cas going through Purgatory and meeting his dead brothers and sisters :DDD: .