AutoCAD 2010 :: Sending Drawings Containing XREFs With Sensitive Data

I have drawings which are occasionally transmitted to vendors, building officials and other parties.   These drawings contain XREFs for the floor plans, roof plans, site plans, etc.  Some of these XREFs contain layers with sensitive information the client does not want distributed to third parties. 

If I'm just sending a PDF or plotting locally the sensitive layers are turned off or frozen and the PDF is plotted without layers.  This is sufficient to protect the sensitive data.  But if the third party requests a CAD file then I have a problem.

If I use Send to create a package of dependent files including XREFs they are included whole with all of the sensitive data on frozen layers.

If I Bind the XREF to a copy of the drawing for distribution the sensitive layers are still included as frozen layers. 

In either case I am confronted with the task of deleting a large number of layers and we all know what a chore deleting layers with content can be.  There has to be a solution to this problem, either an easier way to delete layers or a way to filter them in the binding process.  Currently I am removing the XREF and making a block of the essential layers each time I have to make a distribution but these are large and complex drawings making this a chore as well.

Arguably this would be much simpler if AutoCAD had a better method for removing layers such as offering to a. move all contents to layer 0, b. delete all layer contents or c. cancel instead of just telling me I can't delete the layer because there are contents like we're still using R12.

AutoCAD 2010
AutoCAD LT 2013
Revit Architecture LT 2013