Brian Gewirtz was being kept around as a consultant mostly because he writes material for The Rock. There’s a feeling that Gewirtz being demoted may affect WWE’s relationship with The Rock as the two are very good friends.
When Rock first left WWE years ago, Gewirtz was the one who kept in touch with him and the one who wrote most of his promos when he would come back for special appearances. Gewirtz had been working from Stamford for some time but was brought to TV tapings just to work with The Rock when he was there. Often The Rock would work exclusively with Gewirtz on his segments and promos.
(Partial source: PWInsider)