LAKE MARY, Fla. - An American Youth Football (AYF) coach has received a lifetime ban from the organization after video of an incident surfaced which appears to show the coach striking and then pushing a child-athlete to the ground, the organization said.AYF tournament officials said they were provided with cell phone video of Coach Gerrel Williams "behaving in complete breach of the AYF Code of Conduct." The video was provided to AYF earlier this week on the morning after the incident, and it was then turned over to the Osceola County Sheriff's Office for an investigation into allegations of child abuse.According to an incident report filed by a deputy, Williams is seen slapping a player on the helmet, "with enough force to shift his.