A reveller suffered a seizure after a brutal kicking attack by three city doormen when he was thrown out of a club.
Witnesses were left picking the victim's scattered teeth up from the ground after he was subjected to shocking violence in a dark alleyway in Sunderland last August.
Newcastle Crown Court heard the victim, who has not co-operated with the prosecution of his attackers, had been ejected from Illusions nightclub numerous times but kept coming back and making threats to the doorstaff.
The court heard after 20 minutes of constant goading, bouncers Jeffrey White, Shaun Sproates and Paul Lomax "lost control".
CCTV footage of the sickening violence outside the club, which continued into a nearby alleyway, was played in court and showed the victim being brutally, repeatedly kicked as he lay on the ground.
Prosecutor Kevin Wardlaw told the court: "The injured party has refused to assist the police or prosecution in any way in respect of the injuries sustained by him.
"You will see him, towards the end of the attack, clearly having some sort of fit or seizure on the ground.
"In addition, he lost a number of teeth, which were seen and picked up by witnesses.
"Other than that, the crown cannot give any information regarding his injuries."
White, 51, of Douglas Way, Murton, Sproates, 38, of Beech Crescent, Seaham and Lomax, 41, of Redby Close, Roker, all admitted affray and were sentenced to nine months imprisonment, suspended for 12 months, with £350 costs.
Mr Recorder John Aitken told them: "You are all physically large people, ganged together to make sure there was no way a man you found troublesome and very annoying could succeed in physical conflict.
"You lost control that night.
"You were subjected to a prolonged period of provocation, I bear that very much in mind.
"You didn't attack that person out of the blue, there was a substantial period or provocation."
The judge accepted each man had paid the price of losing their careers as a result of their behaviour and will never work in the same positions again.
The court heard the White was the owner of the security firm which supplied doorman but has not renewed his licence and his business is now closed.
Paul Rooney, defending, said: "He says in 25 years of working in this industry he has never been subjected to such a prolonged type of provocation.
"There were threats to the doorstaff and their families, to burn down their houses, to find out where their wives lived and rape them."
Mr Rooney said White has now bought a gym, where he works day and night.
Vic Laffey, defending Sproates, said: "Immediately after this incident he handed his badge in, he didn't wait for the disciplinary procedure."
Mr Laffey said Sproates has suffered injury himself during his 15 successful years as a doorman and has an offer of different work.
Mr Laffey said Sproates has been deeply effected by his own behaviour and added: "The injured party certainly was working himself but Mr Sproates has never suggested he got what was coming, nothing of the sort.
"He accepts, without hesistation, this is part and parcel of the job.
"On the night in question things went badly wrong."
Graham Cooke, defening Lomax, said his client worked on the doors for 18 years "without blemish" and added: "Unfortunately the injured party was saying a lot of things, threats towards his family and, realistically, that just lit the blue touchpaper.
"He has lost his job, quite understandably, and will never be a doorman again."