Public defender A.J. Kramer, who filed the paperwork seeking a sentencing review, said Watson's release is imminent. Watson already has served 15 months following his arrest in March of 2003.
Watson, a tobacco farmer dubbed "Tractor Man" had been sentenced to six years in connection with an incident that brought traffic in Washington, D.C., to a standstill for two days.
Watson, 51, of Whitakers, N.C., was handed the prison time for his conviction on charges of making a false threat to detonate explosives and destruction of federal property.
Jackson pointed to a Supreme Court ruling that came one day after last week's initial sentencing.
The high court ruled that only juries -- not judges -- can lengthen prison terms beyond the maximum set out in state sentencing guidelines.
That ruling applies only to a Washington state case. But Jackson said he was bound by it and that what he did was illegal.
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