Combine marinade ingredients in a bowl. Add meat pieces and toss to coat well. Let stand for 10 minutes; then drain extra marinade from meat.
Cool a wok or heavy pan with non-stick cooking spray. Add 1 tablespoon oil and heat on high. Add meat and cook until browned, stirring constantly. Add vegetables and sauce. Bring to a boil, reduce heat and simmer until the vegetables are tender but still crisp.