A man who beat his ex-girlfriend so badly with a baseball bat she was left with a shattered skull and lost sight in one eye insists he was defending himself from her and wants a retrial.
Glenn Matthew Cable, 44, appeared in the Court of Appeal in Brisbane on Monday seeking to have his attempted murder conviction overturned.
Cable, who was sentenced to 15 years behind bars for his vicious 2012 attack on Simone O'Brien, argued his legal team convinced him to plead guilty to grievous bodily harm before his trial in April 2014, and that ruined his self-defence claim.
"It was never discussed that if I plead guilty to grievous bodily harm that would affect my self-defence case," Cable told the court.
His new barrister, Simon Lewis, argued "a miscarriage of justice occurred because of imprudent advice".
Mr Lewis said Cable's barrister at the time, James Benjamin, urged him to plead guilty to grievous bodily harm due to the extent of Ms O'Brien's injuries.
Ms O'Brien's left arm was snapped in two places, her top jaw was smashed, her nose and right cheekbone were broken, along with both eye sockets, and her skull was shattered.
She was also left blind in one eye.
Mr Lewis said Mr Benjamin never explained to the jury why Cable pleaded guilty and, when he later gave evidence that he was defending himself, that was at odds with him admitting to unlawfully assaulting her.
Mr Benjamin told the court that although Cable wasn't eligible to claim self-defence in the legal sense, he argued at trial the fact that he "thought" he was defending himself showed he didn't intend to kill Ms O'Brien.
However, prosecutor Sarah Farndon argued there was no need for a retrial, given the jury reached its verdict based on other evidence.
That included Cable admitting he was a "self-confessed liar", Ms O'Brien's children witnessing Cable bashing her with the bat and yelling at him to stop, and the fact that Cable himself admitted Ms O'Brien tried to flee from him.
"The evidence demonstrates that there was no prospect of self-defence," Ms Farndon said.
Cable's trial had heard that he met Ms O'Brien, a divorced mother-of-three, on an online dating site.
During their short relationship Cable became controlling and repeatedly lied to give the impression he was well-off financially.
When Ms O'Brien tried to break up with him, Cable showed up to her Carseldine home and attacked her with the bat.
She spent a month a intensive care and her face had to be rebuilt.
The Court of Appeal on Monday reserved its decision.