"After two and a half years, it's obvious [the suspension] wasn't enough," Stoops said. "But I feel like Joe has moved ahead in a very positive way.
"Two and a half years later, dismissal is really the only thing that's possible."
WATCH >> Joe Mixon - 2016 Highlights
Stoops also discussed his reaction to seeing the same video of the incident for the first time in 2015.
"It was horrible," said Stoops. "I hated it. Hated it as much as anybody did. Absolutely." (CBS Sports)