My dealer did the work on this rear door handles based on a TSB... the issue is now an NHTSA recall, # 15V-040. Ford uses a different reference number in the letter stating you should ask your dealer for a service date for Recall # 15S02 and to give the dealer your VIN.
I just got the letter today. It says they will inspect them and if they pass they will install "reinforcements to prevent future concerns" and if they fail a revised interior door handle assembly will be installed. Of course, because it's a safety recall, no charges for parts or labor will be made regardless of age or mileage on your SHO. They say less than 1/2 day... My dealer did that, the license plate light fixture, replaced the LP fuel pump, replaced the fuel control module, and test drove mine twice between 7am and noon on my last trip to the shop... so it should be quick if they get the parts.
They also list an address to get a refund if you've paid for this service or authorize the dealer to refund the money on presentation of a paid receipt.