As Dawg notes, at least one of the 911 operators at the other end of Ford's ranting has filed a grievance. And he points points to this:
There are now also reports the city's 911 operators are filing a grievance with their union after saying the mayor was abusive to them while waiting what he felt was too long for police help to arrive.
One way or another, that tape is coming out.
And by the way, this is what happens when you spend your first year as boss telling the world your employees are all crap, and then they get a chance for some pay-back.