Gutted Queensland Roar midfielder Danny Tiatto has publicly apologised for the brain explosion that put the club's hopes of winning the A-League premiership in serious jeopardy.
Tiatto was banned for two matches and fined an undisclosed sum by Football Federation Australia's match review committee for violent conduct and bringing the game into disrepute.
The 34 year-old former Leicester captain's unexplained cheap shot on Adelaide midfielder Travis Dodd in Sunday's clash at Hindmarsh Stadium means he'll miss both legs of the club's knockout semi-final against Sydney FC.
The club has no grounds to appeal.
The aggressive Tiatto has had a volatile season with the Roar, cited and suspended after his debut game and then suffering a yellow card suspension before his latest offence.
A repentant Tiatto said as one of the team's most experienced players he should have set a better example.
"I'd like to apologise to everyone involved at Queensland Roar FC, my teammates, the coaches and of course the supporters, for the way I reacted in the game against Adelaide United on Sunday," Tiatto said in a statement issued by the club.
"I'm naturally disappointed and upset that I lost my cool and reacted the way I did in the heat of the moment.
"As an experienced professional I fully understand what is expected of me and I definitely should not have put myself in that situation.
"I let the rest of the boys down and made the game even more difficult than it already was. It goes without saying that I deeply regret what happened."
While observers were stunned at Tiatto's minute of madness, Roar officials are unlikely to take any action of their own, believing the disappointment of missing two semi finals games to be a harsh enough penalty.
Roar coach Frank Farina is likely to turn to Korean Hyuk-Su Seo, who was close to playing against Adelaide at the weekend after recovering from a calf injury.
The other option to replace Tiatto would be youngster Chris Crossman, with training performances set to have a large bearing on who takes on Sydney.
The semi final first leg will be played in Sydney on Friday night with the return game at Suncorp Stadium on February 8.