I agree with the commentators on The News Hour last night - for those of us taking a rather French view of the whole thing, resignation isn't necessary. But as CIA chief it might have been a hard fought battle to stay in office if some pundits caught wind of this. And I suppose part of this has to do with what his family (spouse) response will be - if his wife is pissed and speaks publicly, it wouldn't bode well for his life in office.

SRS