NEW : Richard Harris surrenders to face trial in in ' balloon boy ' case . Richard and Mayumi Heene to plead guilty Friday , attorney says . Jail time possible , but prosecutor recommends bail . Threat of death for mother played role in plea bargain , attorney says .
NEW : Richard Heene surrenders to face charges in in 'balloon boy ' hoax . Richard and Mayumi Heene to plead guilty Friday , lawyers say . Jail time possible , but prosecutor recommends probation . Threat of deportation for mother played role in plea deal , attorney says .