Lots of talk on this on SEA sports radio this morning, and the related Wilson/Harvin schism (you don't get to use the word 'schism' often enough).
Aside from the 'not black enough' issue, there is the one that he is too close to the front office, and isn't chummy enough with the other guys. They talked about how Mike Holmgren, a frequent guest of theirs, said he would tell Steve Young to hang out with his other teammates more, to make them feel like he was one of them. Not start listening to gangsta rap and getting wasted every night, but not staying in the offices late every night pouring over video tape and playbooks.
When it comes down to the supposed Wilson/Harvin schism, of course you gotta drop Harvin in that situaton. You stand by your QB, especially a young, charasmatic one who just let you to a Super Bowl.