jjroland,

   There really isn't a "Freeze" command that I know of in the vm room but I would do what "dvlenk6" suggested in Hiding the "dressmaker dummy" so it is not visible in the modeling room.  You can make the Scene preview window in the VM room much bigger and if you look at your model in the Scene preview you will see that your dressmaker dummy is still visible but it is not visible in the actual modeling window. The scene preview updates with each mouse click so the feedback while modeling is okay. 
 I uploaded an image .  The vm modeling window only shows the clothing item with the Dog hidden,  while the Scene preview window shows how your complete model looks.  It is not the best modeling workflow but it does work and allows you to select your clothing vertices etc without selecting/moving the hidden polygons.

Mike