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An easier option is to hire a turf lifting machine. Start at the straight side of the border, working your way towards the curved front. This machine has the advantage of cutting the turf to a pre set, regular thickness, in long strips. Cut these strips into 1 yard sections and simply roll them up like a rug.
Be careful not to machine cut too close to the new edge.Cut the last 12" or so nearest the curve, by hand.