Video surfaced Thursday of his mother's police interview after a July 2012 fight they had, in which his mother told officers that Dez threatened to knock her out.
In the video, Dez's mother, Angela Bryant, said, "He was telling me to get out of the way. I said, 'Dez, what you doing is wrong. This is what everybody's been talking about. This outside stuff is what's going to get you in trouble.' Then he goes off, 'I don't care!' and grabs my shirt. I pull away from him, he grabs it again and he tears my shirt then he started threatening me, telling me he's going to knock me out."
She also said Dez grabbed her hair and, "He pulled his cap off and he hit me in the face with his cap and I pushed him off of me."
Police documented Angela's bruises at her DeSoto home and later charged Dez with misdemeanor family violence.
Days later, both Dez and Angela appeared before cameras with their lawyer, Royce West, saying Angela asked for the charges to be dropped.
The Cowboys made the receiver agree to stay out of trouble and out of clubs, and then the Dallas County district attorney conditionally dismissed the case.
It's unknown why the video, released by TMZ, is just coming out now, along with who handed it to TMZ and why.
On Thursday, a police report surfaced from a 2011 incident that happened in the parking lot of Walmart in Lancaster.
Police were called because someone reported seeing a woman being dragged from a car that was registered to Dez.
No one was in the car when officers arrived, but two men showed up to pick it up a short time later. And as officers were questioning them, Dez showed up with the woman.
The woman told officers she and another man had gotten into an argument. No one was arrested because she said she was not assaulted or injured.
Dez had previous run-ins with police the same year. He was kicked out of NorthPark Center in Dallas for yelling profanity and wearing saggy pants.
Then, he was sued for not paying for hundreds of thousands of dollars in custom jewelry. He later settled that case.
He also got in a fight outside of a Miami nightclub.
Despite his 2011 and 2012 police incidents the law, he has no convictions.
Dez publicly posted his feelings on Twitter -- first last Friday and then Wednesday, writing, "I need to get me a real raw uncut tv show or something...I can't continue to get betrayed like this.."
He later deleted the tweet.
The Dallas Cowboys officially have no comment about the police report or the video release.
FOX 4 contacted Dez's lawyer and mentor for comment, but we haven't heard back.
There are reports these off-the-field incidents have affected his negotiations, though Jerry Jones has come out saying they will not affect talks with Dez or anyone else.