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Dolly Parton's longtime manager filed for a restraining order against Bryan Seaver, the late singer's nephew who was fired about a week earlier as head of security for her properties. The filing alleges Seaver sent 'terrorizing' texts, including a message saying 'I'm a killer,' and threatened to 'destroy the entire brand,' claiming a campaign of coercion and violent threats against employees and associates of Parton's management company and trust. TMZ also obtained Seaver's termination letter, which ordered him to stay away from the properties and have his personnel 'peaceably vacate' immediately, underscoring an escalating estate dispute within the Parton family in the wake of the singer's death.