It certainly seems possible. The article to which you linked seems to be more of an opinion piece; the following, more news-y piece, also from the Fort Worth Star-Telegram, contains this passage:
In 2014, Barber was detained by Mansfield police and taken to a hospital for a mental health evaluation.
He was arrested in 2019 on two misdemeanor counts of criminal mischief over a 2018 incident in which he was alleged to have damaged two cars by while he was running in Frisco.
According to KXAS Channel 5, a witness alleged that Barber charged toward their vehicle, causing large dents to the side of their cars.
Per a source, Barber had been hospitalized twice for mental health evaluations since his retirement in 2012.
Roughly a year ago, former Cowboys receiver Dez Bryant wrote on Twitter that he couldn’t even enjoy watching old highlights of Barber because he knew he was down and out bad: “As I watch this video and me knowing exactly how Marion barber life is going right now today is why I built @personalcorner … I can’t even enjoy it because he’s down and out bad…we are just a stat and moments to most people…” Bryant posted on Twitter.