The twisted killer, who is a convicted sex offender and kidnapper, is still insisting Brian Phelan was murdered by three men connected to dissident republicans who appeared on the mountain that fateful day and then threatened his life.
But his claims were completely dismissed by the court and Mr Phelan's former partner Amanda O'Riordan, who laughed at the explanation.
"A child could have made up a better story and that one took him almost 15 months to think of it! The tramp, he is a gutless b*****d who could have held his hands up, said sorry and stopped all this misery of a court case," Amanda said.
The court heard that when the victim managed to break free from Carroll, he tried to escape by hiding in a garden, pulling the broken knife out of his body.
Cruel Carroll was witnessed on CCTV stalking after his victim and stealing items from his pocket before making his getaway in the victim's family car.
Knowing that he was dying, Brian called his partner and then called 999 himself, implicating Carroll with his final breaths - "my mate, my mate Dan", he told the operator.
Having driven off, changed his clothes and ditched the car, Carroll told his uncle that he believed he had killed someone.
He was arrested within hours but despite the overwhelming evidence against him, remained silent for 15 months until he made his claim that his life was in danger.
He claimed he could not mention names but two senior dissident names were read out in court - Patrick 'Mooch' Blair and Liam Hannaway, who Carroll had been in phone contact with.
Both men, who refused to speak to police, were quickly eliminated from any involvement.
The jury also heard a few details about Carroll's conviction for kidnapping a woman off a Street in Dundalk a few days before Christmas in 2012.
The young victim was on her way to meet her boyfriend when she saw a drunk man watching her and crossed the road to avoid him.
He followed her and she was bundled into the back of a car, with Carroll repeatedly punching her in the face and head and lying his full weight across her as the car sped to the car park of the Carrickdale Hotel.
The young woman tried to escape but was hauled back and the car drove over the border into Northern Ireland.
That car was driven by Carroll's accomplice, 34-year-old Aileen Gray, and at one stage the victim heard the couple "discussing what to do with her body if she died".
Carroll was sentenced to eight years, was ordered to sign the police sex offenders register for the rest of his life and was also made the subject of a lifelong Sexual Offences Prevention Order.