A father-of-two angered by rules around visiting his children tried to burn down the child agency supervising his access, a court heard.
Tristan Larry Ian McNabb of Mangamutu dropped from the crutches he was leaning on in the dock, crying, swearing and stating "I was supposed to be going home today" as Judge Arthur Tompkins sentenced him to three years' imprisonment.
Court staff then had to escort the 36-year-old from the dock as he continued to rant at the judge looking for an explanation.
His mother also had to be removed from court as she stated her son had been treated badly.
McNabb had previously pleaded guilty to a charge of male assaults female, two of arson and four of breaching a protection order.