Sorry for the confussion.......
I would not pull the turkey off the bone. I would cut along the center bone between the breasts. Then run the tip of your knife along the rib cage as you are gently pulling back on the breast.
Yes cool to below 40. Then wrap with plastic then foil and freeze.
Remove from freezer and take the foil off, leaving the plastic on, the day before reheating. thaw in fridge....
Weather you do the oven or boil in the bag method it is very important for food safety to reheat to 165 in under 2 hrs.
For the oven method place the breast in a roasting pan, take out of the plastic, with a bit of stock. If you have a rack that will sit in the bottom of the pan to keep the breast from sitting directly on the bottome of the pan, use it. If not no worries. Wrap the pan with plastic wrap then foil. Place in preheated oven at 300. Check temp after an hour, if close make no adjustments, if still not close turn up the heat a bit.
Hope this clears up the mud a bit.