Supernatural - The Man Who Would Be King

After the end of the Eve storyline, the final storyline for the season and the set up for season seven gets to be explained to us to help 'catch us up'.  Castiel narrates the events of this episode and his reasons for doing what he is doing.  We see Castiel is not completely under Crowley's control when Crowley insists that Castiel kill Sam and Dean.  Castiel refuses but then makes it violently clear that Crowley is NOT to touch them.  Crowley is amused that he is still loyal to them when they are not loyal to him.  Castiel makes himself invisible and listens in on the boys and Bobby talking and realises that Crowley may be right.  When he does appear to the boys after killing demons sent to get them, he accidentally lets slip words that the boys used while Cas was invisible, revealing that he was listening in and perhaps cannot be trusted.
Castiel reveals in his narration that it was he who started the civil war in heaven because Rafael wanted to release Lucifer and Michael and get the Apocalypse happening the way it was meant to.  He will do anything to stop that from happening.
The boys trap Castiel and ask him if he is working with Crowley but he can't look Dean in the eye.  Demons are coming so the boys escape and Crowley shows up to release Castiel saying once again the Winchesters must be eliminated.
Cas shows himself to Dean hoping to get his support and allegiance.  Dean tells him he is like a brother to him and asks that he not work with Crowley.  When Cas refuses, Dean says he will do everything he can to stop him.  Alone, Castiel asks God to give him a sign to show him the right path, but God is once again silent.
A solid episode that was good to bring everyone up to the same page and understand why Castiel was doing what he was doing.  You also understand that the boys agree with what he is doing but it must be done without the help of Crowley or it is all wrong.  Our gang is fighting amongst themselves and not working together.  Will they be able to work through their differences in time?