White wouldn't say what the incident was except to say it was nothing physical.
"Mayhem's done. He's gone," White said, adding that the incident was "just some bulls--t that I don't want to talk about. We're on a crazy string here of dumb bulls--t."
Miller fought in the UFC early in his career but then moved to Japanese promotions and to Strikeforce. He returned to the UFC with a coaching stint on "The Ultimate Fighter" that was followed by a bad loss to Michael Bisping.
White also was not happy with Miller's playful entrances for the weigh-in and his fight. Miller brought a pink boa and boom box to the weigh-in, and he wore a paper bag out to the Octagon on Saturday.
"When you get embarrassed the way he did against Michael Bisping, then you show up in that pink whatever that thing was, I'm not into that stuff," said White. "It's not my thing. I guess I don't really care if guys do it because you see it at weigh-ins all the time. Just take this thing serious. If you want to be a clown do that stuff on your reality show."
Miller is the host of MTV's "Bully Beatdown," a show that allows bullied teens to get their comeuppance against their tormentors via a trained fighter. He leaves the UFC with an overall record of 23-9, and no wins in the UFC.
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