As soon as he said 'a point of order" I knew he was looking for trouble.
All airlines have "difficult" crew members....what would be interesting to know is if the pilot was the "real" troublemaker or was he just relaying the Captains instructions.
Whatever had gone on before he had no right to refuse the clearances ATC he gave him....i think he got away lightly with her responses as I can think of a few places where the end result may not be so pretty.