Preparing is like getting ready for a court case, many supervisors say: To avoid losing good members of their teams — which could spell doom — they must come armed with paper trails to defend the wrongfully accused and incriminate members of competing groups. Or they adopt a strategy of choosing sacrificial lambs to protect more essential players. "You learn how to diplomatically throw people under the bus," said a marketer who spent six years in the retail division. "It's a horrible feeling.