Bishop O'Brien, who was appointed last year, graduated from St. Joseph's in 1965.
Our prayers continue to be with Bishop O'Brien and his family.
Bishop O'Brien was charged with leaving the scene of an accident.
The police said they traced the car to the diocese and learned that it was Bishop O'Brien's personal vehicle.
The deal also stripped Bishop O'Brien of many his administrative duties.
Bishop O'Brien, who agreed to surrender authority in sexual abuse cases, did not respond to requests for comment.
Regardless, he said, it was clear to him that Bishop O'Brien felt "deep remorse."
Bishop O'Brien was not charged with causing the man's death.
Bishop O'Brien has been free on $45,000 bail since being charged.
Bishop O'Brien was a target of that investigation for allegedly covering-up allegations against other priests.