Simultaneous Outside Block with Forehand Knifehand Counter and Follow-ups

http://youtu.be/XJFjVEuWjOk
I simultaneously block a punch to my face with an outside block while countering to his body with a forehand Knifehand swing.

I follow up (as shown).

If the attacker stays put; so do I.

On the other hand, if he withdraws, I follow.

Without prejudice