Yes, it went to Nadi after unforecast fog formed in Tontouta, Noumea. No, it did not break down. The crew ran out of hours, having diverted back to Nadi while proceeding to Tontouta [NOU went to 300M RVR, without warning, nothing on the TAFOR].
Brisbane was cactus all night.
A replacement crew was flown in on a normal commercial flight from BNE.
Tough day all round.