The turnover at the helm of ABC News’ This Week With George Stephanopoulos continues. ABC News president Ben Sherwood just announced that Robin Sproul, who recently marked her 20-year anniversary as Washington Bureau Chief, will also serve as Executive in Charge of This Week. Sandy Cannold, who only took over as executive producer of This Week after the November elections, has segued to a new role as Executive Producer and Senior Business Editor of ABC News, overseeing ABC News’ team of business and economics reporters/anchors. “Sandy leaves This Week while it is enjoying the best season-to-date ratings in more than three years,” Sherwood said. Still, This Week largely trails its major competitors, finishing third behind CBS’ Face The Nation and NBC’s Meet The Press in total viewers and tied for second with Face The Nation in 25-54 last Sunday. Cannold succeeded Jon Banner, who did an eight-month stint as executive producer before leaving ABC News in August. In another staffing announcement, DC-based Sara Just will become the Deputy Bureau Chief in Washington, reporting to Sproul.