When the teen band 'N Sync began to chafe at its record contract with BMG in 1999, the major labels stayed away, clearly aware that tampering with the act would lead to a legal battle.

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He said he tells trainees turning off the phones can help save their own sanity, but says some agencies could view the act as tampering with evidence.

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This exchange, too, is included in the indictment, as an alleged act of witness tampering.

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