How to make extremely dry pork more palatable?
I'd use it as barbecue. It should shred fairly easily; if not, I'd gently steam it until it does. If it's so dry that it can't be shredded, it probably can't be saved, though you might be able to get satisfactory results with chopping.

All it needs is to be warmed in the barbecue sauce, requiring no further cooking. Include some of the juices and fat that came off of the pork during the initial cooking. Serve on white bread or soft sandwich rolls.

The same procedure would work with many different sauce profiles. A Mexican-style sauce would make it a great burrito or enchilada filling. An Italian-flavored tomato sauce can be served atop pasta. Mix it with a curry sauce and serve on rice. In each case, it just requires shredding/chopping and heating in the sauce.