I don't think he was threatened, Germans are far too nice to take revenge on their dictators (and he probably also doesn't quite fit the 'dictator' model this is aimed at, as I'm not aware of him having funneled large sums of money out of the country; he was a dictator because of ideology, not because he was a power-hungry cleptocrat, and he resigned before the government folded). He could've lived in Germany, his trial was abandoned, but chose Chile to join his family who had emigrated when he asked for asylum.