Add all the sauce ingredients except the broth to a pot and bring to a simmer. Simmer for 20 minutes,
In a medium mixing bowl, toss the meat with the oregano and cumin til fully coated
Heat some vegetable oil in a skillet on medium high. Add the meat and cook til no longer pink. Remove the meat with a slotted spoon and set aside.
Add the onion, garlic and jalapeno and some salt and pepper to the pan and cook til the onion and jalapeno are soft- 5-8 minutes
Pour in the orange juice and bring to a rolling boil then reduce to simmer. Add the meat back to the pan and braise til liquid is about half. 15-20 minutes.
Build sandwiches with gaucamole and pickled jalapenos, serve with sauce for dipping.