We'll have to agree to disagree. But to clarify, I don't think Hansbrough's hard foul should be viewed as instigation here. It was a hard playoff foul that bordered on dirty. The appropriate response was another hard playoff foul that bordered on dirty - not an intentional, two-handed shot to the face with no other intent but to hit the face.
Hansbrough got punished for his transgression. Haslem got punished for his transgression. Punishing them equally is, in my opinion, the lazy way out. Also, it just enforces the idea that the "retaliatory" player should go ahead and get his money's worth.