I'm pretty sure i read somewhere that 4 men started on him and he gave them a hiding
That's incorrect.
What's the true story? I didn't read anything about this case.
Court documents describe the footage, saying Wighton left Academy nightclub at 2:45am on February 3 and walked next door to a restaurant called Akiba.
According to the statement of facts tendered to the court, the first victim was leaning against the front of the restaurant when Wighton approached him and, despite another man trying to pull him away, punched him in the torso, then the head, followed by two headbutts.
After this, the documents go on, another man approached Wighton and appeared to try to shake his hand, but Wighton instead took his hand, hit him in the chest, pursued him and punched him in the face.
About 10 minutes later, according to the description of the video, Wighton stepped onto the road, kneeled down and starting urinating on a bollard.
Three men then called out to him and pointed at a wet patch on his knee, at which point Wighton approached them and said: "Is there a problem?"
The footage then apparently shows Wighton punch and headbutt one of them, punch another in the face and body, before the second man hit him back. A scuffle ensued in which Wighton also punched the third man.
https://www.abc.net.au/news/2018-07-13/canberra-raiders-jack-wighton-penalty-criticised/9991796