The 33-year-old admitted his wrong doing after he initially took to the social networking site and said he would no longer stand up for his teammates.
That came after he failed to leave the court properly as the La Clippers took on the Oklahoma City Thunder.
Barnes was ejected in the second quarter as Ibaka and Blake Griffin got into a scrap. Barnes then shoved Ibaka and was consequently fined $25,000 for his actions.
The Tweet he sent following his ejection read: "I love my teammates like family, but I'm DONE standing up for these n---as! All this s--- does is cost me money. …"
Later on, the forward deleted the tweet, but has now apologised for his recent behaviour. Taking to Twitter again, Barnes this time said: "I'd like to take a second to apologize to the #LACorganization, my #Teammates & #CoachingStaff & the #ClipFans.. For my actions. My bad *accept*. "
However, despite Barnes' comments, a number of his teammates stood up for him after the incident. Barnes will now be hoping to stay out of trouble as he looks to get back on the court.