Exactly

Noam Schieber at The New Republic writes:

Bob McCulloch had every right to pass on an indictment. But absent an indictment, he has no right to the pretense that Office Wilson’s guilt or innocence has been adequately litigated. He should have to live with whatever backlash his non-indictment provoked.

Exactly. You don't want to indict the man, that's your right as prosecutor. Obviously, though, that would have provoked a huge and justified backlash. McCullough is a coward as well as a weasel.