All this discussion is still academic concerning this accident. If (and it's a pretty likely if) the captain was found to have knowingly and deliberately exceeded the aircraft's published limitations (and by a significant margin) to land there he is guilty of reckless operation. Since he killed someone as a result and endangered the lives of others he is criminally liable. Whether he will be charged is another issue but I'm betting he will. The international aspect will add a wrinkle.
The authorities will not jump quickly on this issue because of the time it takes to complete an investigation and because of the serious implications involved in charging a pilot with a crime, especially a foreign pilot. There are still many factors that have to be explored such as the possibility of an undeclared emergency and an inability to recall details which is about the only thing I can think of that could save this guy.