Manslaughter is punishable by up to 30 years in prison.
No sentence date has been set in September.
Boyd remains free on $5,000 cash bail.
McCormick’s statement said he responded to a two-vehicle crash about 1 a.m. June 16, 2019, in Buckfield at the intersection of North Whitman School Road and Route 117. He saw a white Buick Lucerne in a ditch of the northbound lane facing the opposite direction. Both doors of the passenger side of the car had been removed. Black tire marks in the road suggested a car had spun in a circle, he wrote.
A maroon Chevrolet Camaro was facing south against a utility pole that blocked South Whitman School Road. The Camaro had “heavy front-end damage,” he wrote.