I approve for now. I'm skeptical about whether I'll approve in the long run, but I'm withholding judgment.
If God or Lucifer are the only two choices on who brought Castiel back and who got Sam and Dean on the plane, then it has to be God, right? Because I assume Lucifer was the one who shut the door, trying to keep Sam and Dean in the room, so why would he send them out. Also, did he say something about he would have gone directly into Sam, except Sam left? I can't remember if he said that or not.