Interpreting Emotional States through Stage Directions

In a dramatic work, stage directions can subtly indicate the emotional state of a character through their actions and physical positioning. Consider the following excerpt from a play's stage directions:

As the arguing voices fade, JAMES remains seated at the table, fingers tapping rhythmically, head bowed. He glances up with a slight, almost dismissive smirk when SARAH storms out, slamming the door behind her.

Based on this excerpt, what is the best interpretation of JAMES's emotional state, as suggested by the stage directions?