Brumbies hooker Stephen Moore has escaped sanction for throwing a punch in front of the referee and Television Match Officials at Suncorp Stadium on Friday.
The Brumbies remained on top of the Australian Super Rugby conference when they held on to beat the Reds 20-23 in Brisbane.
The Wallabies hooker and referee Steve Walsh were both jeered off the field by a 30 000 strong crowd that witnessed Moore strike Reds flanker Ed Quirk.
The Brisbane crowd believed that Moore should have been sent off in the 49th minute of the match for striking his opponent.
Referee Walsh looked at the incident as there was a try scored in the same minute and ruled with the TMO that Quirk had held Moore at the ruck which prompted his retaliation and the illegality denied "a clear try" to Will Genia.
Reds coach Richard Graham believes that Walsh got the ruling wrong but has opted against taking further action.
SANZAR's citing commissioner has also chosen not to take any action on Moore.
While the crowd was unhappy about Moore not being shown a card Quirk says that he was Moore escape without any sanction and was more upset that he cost his team a try.
"There was nothing really in it," he told AAP. "We had a chat afterwards, shook hands and had a laugh.
"In footy, I've never been one to hold grudges."
"I think you should leave those things on the field.
"I just feel bad because I thought Willy scored."
Brumbies director of coaching Laurie Fisher was adamant that Walsh got the call right and and said that holding a defender should not be allowed.
"The sooner they get rid of that the better,"Fisher said.
"The bottom line is you cannot hold a player."