No, he was not. First of all, he gives Mara no hearing at all. Right from the beginning, he has been very insulting towards not only Mara but also the other labourers. Even if he doesn’t believe Mara’* stories, it is not necessary to be so harsh towards Mara. He even goes to the extent of imprisoning Mara. Moreover, we see that the king has no doubts about the story of Mara. Thus, it is clear that the headman is not justified in calling Mara a lunatic.