As the mystery feud between major agency UTA and manager Shelley Browning's Magnolia Entertainment rages on—UTA recently vowed never to work with Magnolia again, on the heels of Browning pulling almost all her clients from the agency—the lurking question remains: why do UTA and Browning suddenly hate each other? I put in some calls to get to the bottom of it, and learned that the blow-up may have come down to Browning's Svengali-like hold over her clients