At 41:40, he talks about how she talked in an interview with Barbara Walters about Bootylicious and basically claimed she came up with it all herself.....which isn't true, because Rob did most of that work she was claiming as her own.
He got in touch with Matthew Knowles who was their manager at the time, and Matthew told him "It isn't about you. People need to believe that the artist is the force, the artist is the embryo, the artist grows the flower."