I doubt it.

1. Why would Nale keep up the act with nobody there to see him but Nale? The entire premise of that scene, to me, is that Nale is one of the few people who's similar enough to him that he doesn't have to keep up the charade.

2. We do see his composure break later in the story. It's telling that the only thing that manages to make it happen is losing control of the situation. In contrast, Malack's death has almost no appreciable impact on him.