Is it possible to disagree with a Bible teacher's interpretation and still be saved?

Les teaches that this is just an informal Bible study, not denominationally connected, with no one underwriting it, and its purpose is to get people to study their own Bible. He acknowledges that listeners may not always agree with him and says they do not have to. He explicitly states that a person can disagree with some of his approaches to Scripture and still be a believer, and still not be in danger of hellfire. He passes these things on because the book became thrilling to him after he realized things he had never been taught, especially God's dealing with Israel and then the Gentiles, a whole different approach. Once seen, the book becomes exciting and easy to comprehend.