Jason Fletcher was investigated by Fire and Emergency for cutting a firefighter's shirt.
It's believed the woman was out with her dog when she appeared to slip down a bank.
The incident started in the suburb of Addington.
But who controls it?
The Christchurch man's "disgusting behaviour" has lead to violent threats.
Flames tore through three classrooms and an office at South New Brighton School.
It damaged crops and vehicles.
His comments follow a threat made against the Muslim community on Sunday.