Complex sentence: Mameha later tells Sayuri that the bid had ended up a contest between Dr. Crab and the Baron, Nobu having refused to partake in the bidding because it was against his principles.
Split into simpler sentences: Mameha later tells Sayuri that the bid was down to two people, Dr. Crab and the Baron. She also informs that her Nobu dropped out of the bidding because it was against his principles.