First things first, make sure you thaw your 14-pound turkey three days before in the fridge. You can't rush this part because a frozen turkey will just not defrost quick enough the day of. Make sure to add a reminder for yourself on your phone to transfer the turkey from the freezer to the fridge 3 days before serving (the Monday before Thanksgiving).
In a mortar and pestle, mash garlic, salt, oregano, cumin, and pepper together until you get a paste. Transfer to a bowl and combine the garlic mojo marinade with the oil and sour orange juice. Set aside.
To spatchcock (aka butterfly) the turkey, place the thawed turkey, breast-side down, on a cutting board or baking sheet. Make sure it's sturdy so you don't hurt yourself in this process. Run your hand along the center of the bird to find the backbone.
Using a pair of very sharp kitchen shears, cut as close to the spine as possible, one side at a time. You may have to use both your hands to cut through the ribs. Once the backbone is cut out, save it for homemade gravy.
Now, turn the turkey over, breast-side up, and using both hands, one on top of another, press down firmly on the breast until you hear a crack. Transfer the now flattened, spatchcocked turkey to a baking sheet with a wire rack.
Preheat the oven to 425 degrees F.
Rub the garlic mojo marinade inside and under the skin of the turkey. Pat the skin dry with a paper towel, brush it with olive oil and season with a bit of salt and pepper. Tuck the wing tips behind the turkey breast to prevent them from burning.
Place the turkey in the oven and roast for 1 1/2 hours (90 minutes) until browned and cooked through. The internal temp should be 165ºF using a food thermometer. Remove the turkey from the oven and let it rest for 20 minutes before carving. Enjoy!