I did some looking around online and found this over at the honeysuckle turkey site:
I didn't realize I wasn't supposed to leave the turkey on the counter to thaw. Will it be okay to use?
Next time, thaw turkey the safe way: in the refrigerator. For now, if the turkey is still cold to the touch and smells fine, your risk is probably small. Be sure to cook it properly and to the correct internal temperature (use a meat thermometer to determine doneness).
I basically agree with this. If the turkey were still cold to the touch, I would likely cook the turkey - but NOT stuffed and making extra sure that it cooks fully to temp. Before cooking wash the bird inside and out and cook it using a higher temp method - no slow cooking.
If the bird got up to room temp I would go to the store and get another. You can thaw in the sink in cold water in about 4 hours for a medium size bird - you still have time.