Removing the auger bit is definitely DOING it the hard way, not sure how much ya learn doing it that way. 99% of tractors can't reverse the PTO.
Leave the auger on the post hole digger, leave the post hole digger on the tractor. Disconnect the PTO shaft at the tractor, put a bar through the universal joint to rotate it. Turning the auger with the PTO shaft is MUCH easier as you have the gearbox working for you, not to mention that after getting it turned loose a little, the tractor can lift the auger from the hole much easier than your back.
Whoever started this idea that the best solution is to take the auger bit off a stuck PHD really needs slapped. We buy tractors to do the work. The implements have gear boxes that reduce the effort needed to complete the work. Use these things, don't just chuck them to the side at the first issue...