Larry,
Are you representing the PLSS corner as a control point as well, or is it just a regular fabric point? Is this a "porcupine monument" scenario that nancy vonmeyer talked about in yesterday's land records meetup? The recording should be available soon here: http://www.meetup.com/Esri-Land-Records-Meet-Up/pages/Meeting%27s_Recordings
If I'm understanding you correctly there is just one control point in your fabric for the CCR, and you're linking it to the PLSS corner which is a regular fabric point. To tie in your subdivision corner with the PLSS corner (that is associated to the CCR) you can create a connection line with the tie information (bearing and distance) from the sub corner to the PLSS corner. More on connection lines at About the parcel fabric traverse tool—Help | ArcGIS for Desktop
The 0.18' between the CCR (control point) and the PLSS corner (regular fabric point) would still be there until you do a fabric adjustment. After a fabric adjustment, the CCR and PLSS fabric point would be at the same location, and the tie information from the sub corner would still exist on the connection line and would be used in the adjustment if you included/selected the subdivision parcels when you did the adjustment.
-Tim
