Associated Press story of 6/29/2010. Reporting the Germany-England soccer match, the reporter wrote "...a match which hinged on a bad referee's decision."
I can't imagine why the World Cup would hire a bad referee. Did they know he was a "bad" referee when they hired him? If so, surely that is ground for some sort of international protest.
I would like to think they hire only good referees, any of whom might make a bad decision.
Those who write for general public consumption must exercise caution in the use of the language. Otherwise, the public might be led astray.