Prosecutor Sam Bargwanna decided not to offer any more evidence on Wednesday morning, ending the prosecution of the star duo.
The most senior police officer involved in the duo's arrest - Sergeant David Power - admitted on Tuesday he gave false evidence and lied under oath while testifying.
He initially said he'd removed the former Canberra player from Fiction nightclub after seeing him with clenched fists, anger in his face and grabbing another man by the shirt in an aggressive manner.
But Wighton's lawyer Steve Boland pieced together a timeline via CCTV footage that forced him to admit his "memory had failed me" and that what he'd said hadn't happened.
Sgt Power later addressed Wighton, saying: "Sorry, Jack, if that's what happened mate, I thought I saw something different, … I'm sorry."
The star duo had been at Canberra nightclub Fiction celebrating Wighton's 30th birthday, before they spilled onto the street when the former Raider was removed from the venue for alleged aggressive behaviour.
Police had accused Mitchell and Wighton of fighting each other after the former Raider was given an exclusion direction.
The South Sydney fullback could be heard pleading with police to ease up while they were arresting him, his friends heard telling the officers to stop their "police brutality".
Mitchell, 25, had been charged with affray, fighting in a public place and resisting a territory official, while Wighton, 30, was charged with fighting in a public place and failing to comply with an exclusion direction.
On Tuesday, Mr Boland accused the senior police officer of framing his client.
"It is orchestrated what you did, every step of the way ... you tried to have this man and his mate arrested on criminal offences when there was poison at the root of the case," he told the court.
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