Judge Weir said Henderson and Hartley rallied troops to take part in "vigilante action'' by the use of text messaging.
A group of about nine or 10 people went to the victim's Te Poi home. Some used bandannas and scarves to disguise themselves.
Judge Weir said the group arrived at the victim's rural property about 9pm.
"People got out of the van and approached the victim who was cornered in the carport. He was then grabbed and thrown against the wall.''
Judge Weir said the victim was assaulted and several of those taking part had made threats to kill him.
"He was told that this was retaliation,'' the judge said.
Others involved in the attack also stole items from the property but Henderson was not part of that.
In sentencing Henderson, Judge Weir noted that he had a number of breaches of community work and community detention and he warned him against any further breaches of sentence.
"I need to point out to you that if you were to breach these conditions you would face a starting point of 18 months in prison. There would be no other option for you.''