If somebody is looking for racist remarks, they can be found EVERYWHERE. 
If somebody is looking for signs that the Apocolypse is nigh, they can be found EVERYWHERE. 
If somebody is looking for ways that the song Hotel California lines up with an old movie they can be found EVERYWHERE. 
The point it, if somebody is looking for anything hard enough, they can find it in their minds eye if nothing else. Perception is NOT always reality.
I've heard white people called articulate. It's not a phrase that is reserved for racist white dudes to pull out when there is nothing better to say about a particular black guy, unless you are looking for it to mean that.
If I could remember one instance where a broadcaster referred to a non-minority coach or player as articulate in a complementary tone, I would agree with you. Unfortunately I cannot.
I also don't believe for second that the Eagles could have pulled off choreographing Hotel California to a film. But then again, the Eagles aren't Pink Floyd and Hotel California isn't Dark Side of the Moon. 
I can't reference an exact moment because, well, I'm not Rain Man. I'm SURE it has happened in the past, probably to a young coach, like a Lane Kiffin or a John Gruden.
And, actually, as I'm sitting here pondering this retarded subject more, I think the phrase, "He's an articulate guy(or phrases akin to that one)," when describing a black guy is more a reaction to racism than racism. Lets face it. 20-30% (guesstimate) of the whites in this country (and 90% of Texas) is still back woods enough to immediately correspond black with thug, idiot, uneducated, take your pick of the false stereotypes of years gone by. An announcer saying something like 'articulate' is really the PC way to say that he is not those things. So, in a way, an announcer saying phrases like that is denouncing racism.
And, for the record, I agree, PF were much more talented than the Eagles (though Joe Walsh is a guy I'd love to party with). But people still insist Hotel California is going to line up with some classic film, and people still stretch the imagination to make it so - which was my point.
