What did the churches in Asia turn away from according to Les?

Les explains that it wasn't that they pitched Christianity overboard, but they turned their back on the apostles' teachings of pure grace and went back under much of the legalistic teachings and influence of Peter, James, John, and the Jewish community. As Paul writes from prison in Rome just before he's martyred, he has to state that all those in Asia are turned away from him. They had rejected him, and to what extent Les doesn't know, but Scripture is true. They had not remained true to the apostle who had brought them out of their paganism. Les expresses heartache over these little churches Paul had suffered for, spent so much time with, and been encouraged that they were growing in grace and knowledge.