Gadreel!Sam was the one that punched Dean and in Dean's defense (I guess I'll always defend that boy) he had no idea what was in Sam and how he could be damaging him so all he wanted was to try and get whatever was in Sam out of him asap, nothing stupid abt it imho. I've also always felt Dean made the right decision abt letting what we now know isn't Ezekiel in because Sam would have died otherwise and that's just not an option in my book. I am fully aware how divided fandom is abt this though.
And yes, I too loved this entire ep *g* ♥
Forgot to mention, pretty sure Sam saved the day and the entire universe in 522!