According to court documents obtained by E! News, William Howe and Dana Redmond filed dismissals on Tuesday. According to details previously released by the L.A. County Sheriff's Department, their step-mother was behind the wheel of the white Lexus that was rear-ended by Jenner's Cadillac Escalade. The Lexus spun or veered into oncoming traffic and was hit head-on by a Hummer. Howe died at the scene.