On the replay, it looked like after Hinrich fouled him that Hinrich kinda walked over to Steph and said something to him. What it was, I don't know, but Marbury certainly seemed to react to it. And to be fair to Steph, and this is probably totally over-analyzing a meaningless play, Hinrich didn't seem like he was walking over to Marbury to apologize for a hard foul.
Looked like Steph was still pretty heated when he was shooting free throws.