whipsaw
v.— «For example, Ford plans to close 16 plants by 2008. Whether or not the company keeps a plant open often depends on whether a union local will accept concessions, and the company routinely pits workers at one plant against another. This practice, known as whipsawing, is formally opposed by the UAW, but has long been routine.» —“How concessions lost UAW jobs” by Lee Sustar Socialist Worker Online Apr. 6, 2007. (source: Double-Tongued Dictionary)