No, it doesn't matter how you or I use the word. The question would be, did BF himself call any white players "thugs." ISU and coach had better be able to say yes, with verification...
The word thug has been used by many cultures for over a hundred years. I remember the term being used years ago in my all white small town about some troublemaking teens. Kind of a stretch IMO, that if Fennelly used the word thug that it makes him a racist........and the suit claims racial discrimination. It is apparent that Fennelly criticized whites, blacks, and hispanics as well. Seems that was just his style. If Fennelly is discriminating on race, then it would be logical that he is discriminatory against pretty much all people of the race he discriminates against.
Otherwise it can be argued that it is not about race, it is about personality conflicts between people that just do not get along.