Authoritarian conservatives are primarily anti-government, except where they believe the government can be useful to impose moral or social order (for example, with respect to matters like abortion, prayer in schools, or prohibiting sexually-explicit information from public view). Similarly, Republicans' limited-government attitude does not apply regarding national security, where they feel there can never be too much government activity - nor are the rights and liberties of individuals respected when national security is involved.
They're for small government only when it suits them: abortion, prayer in schools, explicit tv/movies; and when "national security" can be used as a catch-all offense against civil rights & liberties (in my words,
to hide their corruption).
Authoritarian Republicans do oppose the government interfering with markets and the economy, however - and generally oppose the government's doing anything to help anyone they feel should be able to help themselves.
Big government is just fine when it comes to keeping their corporate friends' agendae intact, but government shouldn't do anything to help the little guy, who they feel should pick themselves up by the bootstraps, when they generally don't even have the boots.
John Dean hit a homerun with this article.