Yes. That show is the night before Field of Honor in Brooklyn (which is the same night as NXT TakeOver: Brooklyn).
1) That dude in the Pentagon Jr. shirt was hillarious. I wanted him to hit Silas so bad because I can't stand Silas.
2) Yes, Castle's boys are Brandon and Brent Tate -- The Tate Twins. I believe they're working with GFW because I think I remember seeing them promoted for an event of theirs.