The real problem was sexual abuse. Let's check what our modern scripture (Wikipedia) says about Brother Hyles :
Accusations of improper sexual behavior, financial and emotional abuse are highlights to Hyles' legacy. In 1989, the The Bible Evangelist published a story titled "The Saddest Story We Ever Published", accusing Hyles of sexual scandals, financial misappropriation and doctrinal errors. He was accused of a decade long affair with his secretary, Jennie Nischik, who happened to be the wife of a church deacon, Victor Nischik.
Thus sullied. Hey kids, Get on Board the Soul Bus!