This was a lot more than an "altercation." Also, there was police involvement and charges were filed. This goes back to 2009 in Gainesville, FL when Smith was charged with aggravated battery on a pregnant victim, when he allegedly threw his wife into a wall. Published reports say that the wife/victim was pressured by a friend of Meyer's and by Earle Bruce (Smith's grandfather) to drop the charges, and she did. Meyer and his wife then recommended counseling, which the couple attended, but the abuse didn't stop.
Meyer rehired Smith when he got the gig in Columbus. There was another violent incident in 2015 and it appears that Meyer lied last week, from the podium in Chicago, when he denied knowing about it until recently.
Meyer's history of hiring includes not only this guy (Smith) but some other questionable characters as well. And he may have protected Aaron Hernandez, who punched a guy in the side of the head (rupturing his eardrum) but was never charged, and was also a suspect in an attempted homicide (before he was convicted of an actual homicide). If you're okay with protecting and/or enabling violent assailants, then Meyer's your man.