Watching what BU does on this is going to be incredibly interesting.
What you have here are representative examples of two powerful victims groups (rape survivors and the racially oppressed) turning on each other based on their own experiences and statuses.
Either the adults in the Progressive movement will step in and figure out a way to quash this quickly and quietly, or it’s going to get very, very ugly. BU is facing a PR disaster whatever it does, with the likelihood of massive litigation/settlement if they fire the professor.
BU is indeed facing a PR disaster. I love when ivory-tower academics are made to look stupid. That's why I hope it plays out for many months.
As to liability, I don't see her getting anything. Her controversial posts are grounds for firing, IMHO. But again, let's hope she does take it to court!
What will probably happen if BU is lucky is that it will convince Saida Grundy to resign and accept a separate bonus in exchange for a hold harmless agreement in which she indemnifies BU and promises to abstain from any further action on her part.