I felt a bit sorry for Martin last night I have to say as it looked like he was being singled out. It's not nice to castigated like that publicly either. If Danny felt he must say something, he could have pulled him aside instead of making his berating the centre of the whole camp.
Martin was gone for half the day on the task, a task where he got them food. They were already bitching about him telling the story of it before they started on the water. Would it have killed one of them to have thought, well he is away half the day, I'll make sure the water is topped up because he will be tired when he comes back?