The story of the stranded lamb shipment has a happy ending.
FedEx called back late last night with an update: it turns out, the package had never gone to Arizona Wednesday night. On the tracking site, it APPEARED to have done so because the CONTAINER scanned in at the airport in Arizona --- but my box of lamb was mistakenly left off that container. It spent Wednesday night and all day Thursday in a warehouse in Memphis, and fortunately that warehouse was extremely cold. The box touched down in Arizona early this morning, and was delivered to my folks by noon.
Amazingly, the meat was still frozen solid as a rock. Thank God for small miracles. Still frozen, and I get my shipping charges refunded because it was late.
Mom says she's planning to thaw the largest package of ribs and enjoy it tomorrow night with some good friends of our family who have also retired to that area.