Check the temp is a few places. Your probe could be in a seam of fat and you could be getting a false reading. Also test the feel as the probe goes in. If you feel resistance then it isn't done. The probe should side in like going int butter. Also, check the accuracy of your thermometers just in case.
Finally, if it really is done, which is unlikely, wrap it in a couple of layers of HD foil and put it in a dry cooler wrapped in old towels or clean newspaper. It will stay hot for several hours.
"Ron Rico, Boss. You can call me Captain Ron..."
The Naked Fatty!
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Remembering a friend