Todd Palin, Unofficial Co-Governor?

Why is Todd Palin so involved in his wife's gubinatorial job? Is it normal for a governor's spouse to be cc'd on official correspondence, attend official meetings (including those that would normally be behind closed doors), and without the Governor, go on state-paid-for flights to survey mineral deposits? Is he a state employee or just unofficially job-sharing the Office of Governor with his spouse? Why was he involved in Troopergate in the first place? Why is he refusing to be questioned about his involvement? These are all valid questions that need to be answered BEFORE the Presidential election.