Certainly possible, but perhaps it's a "Nixon in China" thing. Only a rabid anti-Communist could get away with negotiating with the Chinese, and perhaps only an outspoken black man with dreadlocks can make an impression on those who wouldn't listen to Peyton Manning.
I agree with you, the message has to come from within, no white person is going to be able to deliver it. But that community seems so invested in blaming everyone else but themselves that whenever a black man comes out and says anything against the community they are instantly called an “Uncle Tom”. I have hope for his message but the reality is that i wouldn’t be shocked to see people attack Sherman too.