2:13 PM PT-- Westbrook has been fined $25k for “directing profanity and threatening language to a fan.”

1:54 PM PT -- The Utah Jazz just announced that they have permanently banned the fan involved in the verbal altercation with Russell Westbrook after they say a team investigation revealed the fan acted inappropriately.

The Jazz just released a statement ... saying, "The Utah Jazz and Larry H. Miller Group announced today a permanent ban of the fan who engaged in the inappropriate interaction with the Oklahoma City Thunder's Russell Westbrook last night at Vivint Smart Home Arena. The ban is effective immediately and includes all arena events."

"The organization conducted an investigation through video review and eyewitness accounts. The ban is based on excessive and derogatory verbal abuse directed at a player during the game that violated the NBA Code of Conduct."

"The Utah Jazz will not tolerate fans who act inappropriately. There is no place in our game for personal attacks or disrespect."

Jazz President Steve Starks also addressed the situation ... saying, "Everyone deserves the opportunity to enjoy and play the game in a safe, positive and inclusive environment."

"Offensive and abusive behavior does not reflect the values of the Miller family, our organization and the community. We all have a responsibility to respect the game of basketball and, more importantly, each other as human beings. This has always been a hallmark of our incredible fan base and should forever be our standard moving forward."

"I swear to God, I'll f*ck you up, you and your wife. I'll f*ck you up."

Russell Westbrook let the profanities fly at the OKC Thunder vs. Utah Jazz game on Monday ... verbally threatening physical harm on a fan in the 2nd quarter of the game.

So, what did the fan say to set Russ off??

If you ask the fan, 45-year-old Shane Keisel, he denies ANY inappropriate or racist words were said, claiming he yelled, "Ice those knees up!" to the MVP.

As for his wife being involved, Keisel says she never said a word ... and is pissed Westbrook went after her too.

"She never got up. She never stood up. She never said a word to him," the fan told ESPN after the game.

"I mean, it's all fine, we're having fun and games with the guy and we're talking, but at the end of the day, no man should threaten a woman, period."

"I'm not afraid of the guy. Come on up. But when you threaten a woman that's 5 feet tall and 110 pounds, you're a big man. So this guy needs to be exposed."

Brodie says he doesn't regret the blowup because he heard something completely different -- something racially charged -- "Get down on your knees like you're used to" ... and that's what made him go nuclear.

"For me, I'm just not going to continue to take disrespect for my family," Westbrook told reporters after the game.

"And if I had to do it again, I would say the same exact thing, because I truly will stand up for myself, for my family, for my kids, for my wife, for my mom, for my dad every single time.

"I expect anybody else to do the same. So that's kind of where I'm at with the whole situation."

"As for beating up his wife, I have never put my hand on a woman; I never will. Never been in any domestic violence before. Never have before, but once he said the comment, his wife repeated the same thing to me as well. So that's kind of how that started."

Russell has gotten support from ex-NBAer Matt Barnes ... who said, "I said it b4 @utahjazz have the most racist fans in the @NBA."

The Jazz released a statement ... saying, "We are continuing to investigate the unfortunate exchange at tonight’s game between Russell Westbrook and fans."

"Multiple warning cards were issued by arena security. Players and fans have a shared responsibility to create a safe and respectful environment. If it is determined that any fans violated the NBA Code of Conduct, appropriate action will be taken."