Mentioning race doesn't make a statement racist, nor does it cause a racial divide. Much has to do with context. In fact, his most inflammatory statements could be viewed more negatively towards the black community than anything else. What I will do that no one else has done is refer specifically to what he said.
When he spoke about what he looks for in players at certain positions, he used language that could be interpreted as racial stereotypes. QBs being from stable, two parent homes with 3.5 GPAs etc. Then he said he wanted defensive lineman from single parent homes that have had a life of struggle, so they can go earn it for mama, etc.
Now, if you want to say it isn't fair that he can openly say that but white coaches can't...fair enough. But if anything it reinforces how many feel about the black family structure in America. Not stoking flames of the current racial divide that we so many others (black, white, brown, yellow, red all guilty) doing in our country and around the world.
Every coach is using some angle to get the players that they want at their respective schools. A black head coach using a black angle to get black players to his school is no different than what's being done in living rooms by nearly every program in the country.