In a medium bowl, mix together teriyaki sauce, ginger, sesame oil, orange zest, vinegar, water, cayenne pepper, and garlic. Place steak in a shallow dish, and pour marinade over meat. Cover, and refrigerate for at least 2 hours.
Preheat grill for high heat.
Lightly oil the grate, and place meat on grill. Cook for 3 to 5 minutes per side. Test for doneness.