Maybe I am "another cia reject"...or maybe not.  ;-)

The adjudicators wanted to meet with you as well?  Wow, scary.  I never met the adjudicators.  I just got my security denial letters with their names signed on it, and then them signing letters denying my appeals.  I received the same letter that you linked above.  Yes, I also signed in upstairs (2nd Floor) in the Dulles Discovery Bldg, first name only, we watched this video:
https://www.youtube.com/watch?v=4blyf5lTK6s

Then the polygraphers come grab their victims.  Sad to hear that they made you talk about your porn habits.  I was asked a leading indirect question about looking at porn and I replied "hell yeah, I look at porn!  Only at home though".  If they would have asked for more, I would have told them I prefer the softcore genre, curvy women naked in public and things like that. lol.

You'll get through this.  The good thing is now you know how the poly works and you can easily pass it next time.  Just deny all their accusations, don't confess, and relax and think of other things (mental countermeasures works great), and you'll be fine.  I lied my ass off on another later poly that I took elsewhere and passed with ease.