Multiple sources who were inside Club Onyx tell TMZ the fight started when Vince went to take money out at the "cash cage." We're told Vince was complaining about a surcharge to withdraw money -- and that's when the manager got involved.
We're told the manager is from Oklahoma and flashed an upside down "hook 'em horns" hand signal and said "F**k the Longhorns" to Vince -- who, if you don't know, was a National Championship quarterback for the University of Texas Longhorns.
http://www.tmz.com/category/tmzsports/
note: I also love that I'm posting a report from TMZ