Forde Nehemia Jury (45) appeared before the Parole Board for the first time last month while serving a prison term of three years and five months at Otago Corrections Facility.
He was sentenced in August 2018 over the attack, which was a near replica of another incident 15 months earlier.
On that occasion, Jury subjected the victim to a six-hour ordeal which left her with two black eyes and a broken toe.
When he was released from prison for that assault, the pair reconnected and in May 2018, the man invited the victim over to discuss the state of their relationship.
After drinking wine, Jury launched into the brutal attack without warning.
Following further blows, the incident ceased as suddenly is it started, the Dunedin District Court heard at sentencing.
Jury apologised and hugged the woman but flew into another violent rage moments later.
He drove his knee into her chest to keep her on the floor and hit her repeatedly.
After picking up a metal bar and standing over her, he said: ''No-one is getting out of here alive.''
Jury dragged her around the lounge by her hair, pulling out a ''large clump'' from her scalp, and she was only able to escape when her assailant became distracted by his phone.
Before police arrived at the scene, he urinated on her bed and put debris in her covers.
The Parole Board noted as well as the convictions for violence, Jury had also racked up a host of driving offences.
He had completed the first phase of the Drug Treatment Programme and was scheduled to later undertake the Medium Intensity Rehabilitation Programme.
Until they were completed, panel convener Mary More said, Jury could not be safely released.
There were comments, however, about the prisoner's positive behaviour which had resulted in his minimum-security classification.
He ''spoke well'' to the board too, Ms More said.
Jury would have to complete his prescribed rehabilitation courses before he could be released, she said.
He would next appear before the Parole Board in April next year.
