You mean like disturbing an NSA agent while he sleeps?
Your excuse is an easy front for an NSA agent to hide behind even though you did announce your schedule before the game started. So what! If you were chosen as an agent you have created the perfect front to hide behind and try to keep a low profile. Word of advice, you'd better be super helpful for the village when you are awake. In fact it may be wise for the village to keep a real close eye on you.
I'd much rather do the hard work to zero in on the strongest candidate to be an NSA Agent.....failing that and if we can't identify a strong candidate as an NSA Agent you, with your convienant excuse, make the perfect defualt candidate. Worst case scenario we would at least be able to confirm if this is or is not a ruse.