My friend was charged with 2 aults (one simple and other aggravated-broken nose) in Canada by his wife...?

Your scenario makes no sense. He was sick and couldn't get free medical help in Canada, so left to get it elsewhere; he surrendered his pport, and then he left the country; he was charged with crimes he did not commit, so he fled instead or going to court. Your friend is either the dumbest guy in the world, or you don't have your story straight.