Flight risk?
1. He made it clear from the beginning that he would fully cooperate with any decision/ action that the police made in the investigation, including if they were to decide to press charges against him.
2. As others have observed, he went into hiding because the New Black Panther dickheads put an illegal bounty on his head, and he had no interest in getting lynched by a bunch of rabid black supremacists before he could even have the chance to go to trial.