Combine pork, salt and water in medium pot.
Bring to a boil, reduce heat and simmer gently until barely tender, about 20 minutes.
Remove from heat, let pork cool in liquid.
Drain still warm liquid into bowl, and set meat aside.
Put ancho chilies into cooking liquid,and soak for 20 minutes.
put chilies and liquid into blender, add garlic, oregano, and scotch bonnet sauce, puree until smooth.
In dutch oven over med-high, warm oil.
Add onion and saute until golden 10 minutes.
Add chili puree, hominy, and stock. (add more stock if needed for soup like consistency.
Stir in pork.
Bring mixture to a boil, reduce to low and simmer uncovered until tender 30 min.