I was afraid this might be the only way. It's too bad there isn't a way to install it as a template or imaging agent that only adds the SMP and DS agents. Something like you do to make VMware clonable from a template. The image prep job could then take it out of that mode after sysprep and prior to reboot for capture.
I ended up just turning down all my software delivery policies since I was adding and deleting the computer record at a regular enough frequency to exclude it from anything.
Thanks