Barton was dismissed just 32 minutes into a crunch clash at the foot of the table having aimed a low blow at Tom Huddlestone.
Barton insists he was only guilty of overdoing his defence of 19-year-old Darnell Furlong but after Hull bagged a vital 2-1 win courtesy of Dame N’Doye’s 89th minute header, his actions could have grave implications for QPR’s relegation battle.
“I think he just went over to protect Darnell but it’s a silly sending off,” said the 14-goal forward.
“It’s kind of cost us the game. He’s the villain and rightly so for getting sent off. He’s got to deal with it.
“He’s just held his hands up and said sorry. There’s only so many times you can say sorry. We move on now, we’ve got a squad and that’s the main thing.”
Barton took to Twitter after the match apologising to fans and players, and later gave an expanded account of his latest moment of madness.
“As one of the tallest trees, you catch the most wind,” he stated.
“It’s a testament to the kind of person that I am that I’ve fronted up. I’ve made a mistake, I’m human.”
“I just felt we had a young kid, 19 years of age, making his debut. Really, senior pros shouldn’t be running over asking for him to be sent off.”
Hull’s deadline day signing N’Doye has gained most of the garlands for his last-gasp winner, his second goal in as many starts.
HULL CITY: McGregor, Dawson, Bruce (Ramirez 53), McShane, Elmohamady, Livermore (Hernandez 67), Huddlestone, Meyler (Aluko 82), Brady, Jelavic, N’Doye.
QPR: Green, Furlong, Ferdinand, Caulker, Yun, Phillips, Henry, Barton, Kranjcar (Traore 78), Austin (Zarate 75), Zamora (Doughty 64).
Referee: Anthony Taylor (Cheshire).