Most speculation about why Sarah Palin decided to quit her governorship falls into one of two camps. Some think that there’s a big scandal looming: as the always perspicacious Josh Marshall wrote, “I would not be surprised if this latest round of revelations shook something else loose that we haven't heard about yet.” Her bizarre press conference felt rambling and manic, almost breathless, and she assumed a martyred pose in talking about the numerous ethics complaints that have been made against her. She certainly sounded like someone facing oncoming disaster.