A man who was thrown from a skateboard while "hot-boarding" near Santa Clarita has died, sheriff's officials say. Edward Culhane, 35, was cruising along on his skateboard while holding onto a vehicle along Cedarfalls Drive near Urbandale Avenue Saturday evening when he lost his grip and hit his head on the ground. The driver, 33-year-old Ryan Howell, is suspected of driving under the influence of alcohol or drugs, Los Angeles County sheriff's said. Howell was arrested and booked for felony DUI. 'Hot-boarding' is a dangerous stunt involving a skateboarder being towed behind a moving vehicle. A San Diego County man...