I am not a pilot, but I have been in over 600 heavy aft cg stalls. The majority in a 727 certifying hushkits. What I was told is that once you "blank" the tail on a T tail aircraft you are usually dead. The aircraft will flip. If the pilots are still alive and capable recovery is still possible unless the aircraft has sustained unrecoverable damage.
Alaska 261 lost the stab when the pilots activated the auto pilot which released the brake. The aircraft(md80) flipped end over end until it hit the water at which point it was backwards.
If you look at Md80 and 727 FedEx hushkit planes you will see the "fins" on the engines that are there to energize the aft turbulent air and hopefully keep the tail from "blanking: and allow the pilot to recover.
Boeing calls them "Chines" If you imagine the trajectory of a plane in stall you can see how these might help.