Was azimuth lost for there to be a breakdown visually? I am not familiar with Goldcoast aerodrome but looking at ERSA and webtrak I'd say the controller likely never lost azimuth. Sure, it got close but no doubt everyone knew about each other.
The fact the aircraft went around meant there more than likely wasn't a runway separation incident (though more than likely there would have been had Virgin landed).
If it's done visually, you don't need vertical.
I think I'd rather listen to the tapes and see the radar tapes with GS etc before I hang anyone over this one.