Washington University will not remove a black woman... end of story.
Too late to make a change now probably, plus there would be cries of racism.
If Palin comes across well she will get more praise for having to deal with a biased moderator. Could work in her favor. I would love to hear her make a little snarky remark about media bias but I suppose this would just make her look mean and petty. She wouldn’t be, but the reaction would look so negative.