As I understand it (still not confirmed by research however), Bannon was only removed from the "NSC Principals Committee"...not the NSC.
Perry, as energy secretary, and Nikki Haley were added to the Principals Committee--probably a good idea.
David MartoskoVerified account @dmartosko Clarification for my colleagues: Bannon wasn't removed from the NSC, only from the NSC principals committee. He still attends NSC meetings.