Complex sentence: Joy Hoffman, the head of Luxembourg's foreign-language Oscar committee, was disappointed by the rejection, commenting that despite the fact that the film was a "borderline entry", he noted that "without Luxembourg the film wouldn't exist".
Split into simpler sentences: Joy Hoffman, the head of Luxembourg's foreign-language Oscar committee, was disappointed by the rejection. Although he accepted the notion that the film was a "borderline entry", he noted that "without Luxembourg the film wouldn't exist".