It is easy: he is a proven liar who is ready to endanger other people. He lied about his flight plan and imposed himself to a remote base in one of the most inhospitable regions of Earth. Had anything happened to him, rescuers would have had to risk their lives; he got lucky but right now, he is eating into the base's reserves of food, water, energy and fuel.

I can guarantee you 100% he doesn't care for a second about sick kids, the same way he doesn't care for a second about the people on the base.