McCormack must live in a parallel universe if he ever thought Broad's account of flying off on an overseas date, followed by an apparent move to extract money from him, was just "a personal matter".
Broad has been forced to quit as assistant minster to McCormack after sensational claims about exchanges with a young woman he met through a "seeking arrangement" website.
Barnaby Joyce's position appears to have been weakened rather than strengthened by his publicity tactic.
Nationals leader Barnaby Joyce is under intense new pressure.
The government will push on with putting its legislation for a February 11 same-sex marriage plebiscite to the Senate.