What did the man realize about what he had been hearing compared to the Book?
He realized that what he had been hearing out there was running contrary to what he was seeing in the Book. He had found their material on the Internet and dropped out of seminary, recognizing the contradiction between the teaching he heard and the Book itself.
Les explains that the man had gone through seminary courses and found that the further he went, the further they were taking him from the truth, so he dropped out. He had found their material on the Internet and realized that what he had been hearing out there was running contrary to what he was seeing in the Book. Les points to this as the beauty of God's grace: God will pour out wisdom and common sense to any who appropriate it by faith, but we have to stay in the Book to get it. We cannot leave it up to the pastors alone; the average individual must learn to get into the Word and seek these things out.