PORT-AU-PRINCE (Reuters) - The majority of Haiti's transition council who had nominated an interim prime minister earlier this week has walked back the decision, exposing the internal turmoil of the group charged with leading the Caribbean nation out of a prolonged crisis. Late on Wednesday, four of the council's seven voting members issued a statement saying they will go back to an original agreement to choose a prime minister from a pool of applicants, after having tapped former official Fritz Belizaire for the job. In recent years, Haiti's political and social order has suffered repeated setbacks, from a presidential assassination to a major earthquake, aggravating a power vacuum increasingly filled by armed gangs vying for power.