Add the pork, salt, bay leaves, and water to a Dutch oven. Bring to a boil 0ver medium high heat. Cover and simmer for 45 minutes.
While the pork is simmering, soak the dried chilies in hot water for 20 minutes.
Add the dried chilies plus a 1/2 cup of the soaking liquid, garlic, oregano, cumin, and 1/2 cup of orange juice to the blender.
Purée until smooth.
After the pork has simmered for 45 minutes, remove the cover and let the liquid evaporate. Let the pork fry in it’s own fat for a few minutes.
Pour in the rest of the orange juice, deglazing and scraping up the brown bits from the pot. Pour in the chili sauce. Bring to a simmer. Cover and place in a 300 degree preheated oven for 20 minutes.
Take off the cover and cook for another 20 minutes.