Answer: I think you need a sod cutter. These can be rented for a day or a half a day and do the job very quickly, but they do require some upper body strength to operate. You might try asking locally at places where they rent tillers and similar types of equipment.
Another approach would be to conserve all that good organic matter by turning it under rather than removing it. This will allow the sod to compost in place and help to enrich the soil.
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