I think you got the outcome ranking flipped. If Obama knew and lied: politicians tell lies and have done so for ever.
If he didn't know, then the most powerful spy agency in the world was disobeying an elected official. Given the control they could exercise over officials via say black mail (just think what Anthony Wiener would have done to avoid those pic's coming out earlier or Petraeus to avoid his affair being known), this is really scary.