Most Confusing Episode Ever?

Does anybody else think so? I'm in the camp that typically appreciates the 
questions as much or more than the answers. But this episode was just one 
enigma after another. I didn't (and still don't) understand half of what 
happened. And the appearances of Alpert and Abbadon aside, this return to 
the flashback format was rather boring so it probably goes down as one of
my 
least favorite episodes ever.