Soak the hominy in plenty of water overnight. Drain. Season the pork all over with 1 teaspoon salt and the black pepper. Heat the oil in a large pot over medium-high heat. Sear the meat in batches until well browned on all sides. Transfer to a plate. Add the onion to the pot and cook until soft, 5 to 7 minutes. Add the garlic, chile powder, cumin, oregano, bay leaf and cinnamon. Cook 1 minute. Return pork to pot. Stir in the chipotle, hominy, beer, 6 cups water and 2 teaspoons salt. Simmer, covered, for 1 hour. Uncover and simmer for about 1 to 1 1/2 hours more till meat and hominy are tender, adding water as needed if too thick. Stir in collards for last 20 minutes. Discard bay leaf and cinnamon. Taste and adjust seasonings. Ladle into bowls; garnish with lime, cilantro, avocado and radish.