What was Jeremy Coney doing getting naked during the Test?

Section
News,
Publish Date
Tuesday, 28 March 2017, 12:56PM

SOURCE: SKY SPORT NZ

Strange scenes at Martin Snedden Park today.

The camera crossed to a shot of a man getting naked on the sight screen at The Firecats End. 

That man was legendary former NZ Cricket player Jeremy Coney. 

Is this the first ever public mastebatorium?