Discovery Networks International President Dawn McCall, Human Resources chief Pandit Wright, and a couple of channel presidents are out, while marquee company outsiders, including analyst Tom Wolzien and former Paramount syndication chief Joel Berman, have been retained as consultants. Zaslav, who decamped the senior ranks of NBCU to join Discovery in November, informed company employees of the changes this afternoon with a bluntly-worded, multiple-page internal memo entitled "Positioning Discovery for Growth: A Message from David Zaslav." He detailed those executives'fates under a three-pronged plan to "build strong brands," "create a lean and aggressive organization," and "lead in new media and brand extension." As part of the plan, he has eliminated Campbell's position altogether, organizing network general managers into five branded groups that will report directly to him.