Thank you everybody for the kind words. It was disappointing, but not unexpected. On the plus side, the shed has been cleaned out and de-cluttered for the first time in who-knows-how-long! I really do appreciate all the help and encouragement that everybody here flooded me with, it was far more than I expected or could have asked for!
Like many have said, we take solace in knowing that we gave him a good final week, and that he went out with more dignity than just about any other turkey that's born into the factory farming system.
Instead of spending an entire day digging a hole for him that would probably end up dug up by an animal anyway, we took him out and (ceremoniously) left him in the woods (we have about 15 acres of woodland) - we figure the wild animals need to eat too (and I really didn't feel like digging down through our rocky/clay soil if we are being honest).
On the plus side, though: I'm pretty sure that I want turkeys now. lol