In a large bowl, mix together rice wine vinegar, garlic, brown sugar, olive oil, and salt and pepper. Stir in pork pieces, cover, and leave at room temperature for 1/2 hour.
Heat a large wok over medium heat. Toast almonds in hot, dry wok until golden brown and fragrant.
Heat vegetable oil in wok over medium-high heat. Stir in marinated pork pieces, ginger, and chile paste. (Discard remaining marinade.) Mix in teriyaki sauce, and increase heat to high; cook, stirring constantly, until pork is white. Stir in peppers, and continue to stir fry until most of the liquid has evaporated. Top with toasted almond slivers and fresh mint.