Lightly coat a large pot with a few spritzes of olive oil; heat over high heat.
Brown the meat on all sides, approximately 5 minutes.
Transfer the meat to a plate and set aside.
Spritz the pot again; heat over medium-high heat.
Add the onions, peppers, and garlic; stir until they begin to brown.
Add the vinegar; stir, scarping up any brown bits from the bottom of the pan.
Add the broth and diced tomatoes.
Bring to a boil.
Add the bay leaves, cumin, jalapenos, and tomato paste, stirring until all the ingredients are blended.
Return the steak to the pot.
Bring the mixture back up to a boil, cover; lower the heat and simmer until the meat is very tender, about 2 1/2 hours.
When the meat is tender, shred gently with a fork.
Remove and discard the bay leaves before serving.