Finally gone according to this SunLive NZ article
In September 2014 it was going and Underwater Solutions were taking it:
Here is the talk in April 2014 about removing the artificial reef affectionately known as “Mt Reef” .
See this page (2009) for background information:
I can’t see how one relatively small construction can make a decent surf break when the best breaks have the right shapes underwater in many directions.
Any comment on “local lifeguards complaining“?