The solution to this is simple! Each college should put out an official policy statement that says, "we will not use any textbooks selected by a majority committee of white people."
Legally, what could the board of governors do about it? The discussion of the existence of racism is barred by Florida law!
Tell them to cite, in the sociology textbook they manufactured, precisely where racism or any sort of discrimination like this is mentioned. Ask them to give a historical example of how this could possibly be a problem!