Complex sentence: At one point in the 1990s, Glenn Danzig was approached for the role in the 1990s due to a slight resemblance, however, Danzig declined as the shooting would interfere with his band's nine month tour.
Split into simpler sentences: At one point in the 1990s, Glenn Danzig being approached for the role in the 1990s due to a slight resemblance. However, Danzig declined as the shooting would interfere with his band's nine month tour.