“I understand why I had to go,” Mr. Bitney said. “I accept that. I was in the governor’s office and a trusted adviser. I betrayed that trust by not being forthcoming about what was going on in my personal life.”

Gov. Palin’s spokesmen have given conflicting explanations for Mr. Bitney’s dismissal. At the time, the governor’s office cited “personal reasons” for Mr. Bitney’s “amicable” departure, according to contemporaneous news reports. Last week, Sharon Leighow, a spokeswoman for the governor’s office, said “John Bitney was dismissed because of his poor job performance.” She declined to provide further details.