In a frightening moment when reality radio turned all too real yesterday morning, motorist Cheryl Picker of Shoreham was debating the Michael Jackson sexual-abuse case on the air when her sport utility vehicle was hit and rolled over on the William Floyd Parkway. Picker had just finished telling radio talk-show host Curtis Sliwa, "Maybe those are the parents that are the pedophiles," when listeners to WABC/770 AM heard a loud crash, the sound of crackling glass, tearing metal and then silence. "Cheryl, are you OK?" co-host Ron Kuby said. "Cheryl? Cheryl?" A faint voice responded, "Please call the cops." Sliwa...