Harcourt, who suffered a black eye, a bleeding nose and suspected concussion, is understood to be shaken but Ms Brotherston said he would "definitely" be back at work this week.
His old colleague and former Fair Go presenter Kevin Milne said it was "incredibly lucky" that the show's reporters had not suffered more serious assaults.
Milne said that in his 27 years with Fair Go he had never been physically attacked despite numerous confrontations and a man threatening to blow up his house.
He also struggled to remember any of his colleagues being hit.
"The astounding thing is it hasn't happened more often ...
"When you think of some of the situations we were in it just astounds me there wasn't more aggro of that type," he said.
"You'd get plenty of people fronting up with their fists.
"Maybe the younger ones like Gordy who are fronting up got it instead of me because I was such an old bugger and they probably had a sneaking respect for the elderly."
Milne said the show rarely used back-up security for its reporters although staff were well aware of the potential for serious conflict.
"I think it ramps things up to be honest.
"I wouldn't like to [have security] unless there were very good reasons for doing so.
"But I suppose if it became a regular thing you might do though. As I say I've never been attacked."
The previous Fair Go investigation into the accused looked at two cases where his finance company repossessed vehicles before improving and selling them on his car yard at higher prices.
In one case a repossessed car, valued independently at $800, had $3000 spent on it before it was put back on the lot for $6995.
The car dealer and financier said he had acted within the law and profits from the sales were "modest" and his practices were "standard".
The accused could not be contacted for comment about whether he will defend the charge against him.
Another man, whose number was listed as the after-hours contact for the dealership, would not comment on what Fair Go was investigating his colleague for.
