2 tablespoons red wine vinegar, divided
1 teaspoon dried oregano
2 teaspoons olive oil, divided
2 garlic cloves, minced
4 (4-ounce) boneless center-cut loin pork chops
3/4 cup plain fat-free Greek-style yogurt
1 tablespoon chopped fresh dill
1/2 teaspoon salt, divided
1 1/2 cups diced plum tomatoes (about 2 medium)
1 cup diced seeded cucumber
1/2 cup diced red onion
Cooking spray