To prepare steak, combine first 6 ingredients in a large zip-top plastic bag. Add steak to bag; seal and marinate in refrigerator 20 minutes, turning occasionally.
Prepare grill or broiler.
Remove steak from bag; discard marinade. Place steak on grill rack or broiler pan coated with cooking spray; cook 5 minutes on each side or until desired degree of doneness. Let stand 5 minutes. Cut steak diagonally across grain into thin slices.
To prepare slaw, combine juice and next 6 ingredients (through 2 garlic cloves) in a large bowl. Add slaw and next 3 ingredients (through cilantro); toss well to combine.
Divide steak evenly among tortillas; spoon about 1/2 cup slaw onto each tortilla. Fold in half; serve immediately.