Uninstalling DPM agent from a Server Core

I rebuilt my DPM server and now I'm in the process of installing the agent on my clients. I didn't uninstall the agent before rebuilding now I'm getting the error "agent installed from another DPM server, please uninstall and reinstall agent". That is simple enough to do on a full install but what about a core install? There is no uninstall file on the CD and I can't open up the control panel. What can I do? 

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Armando Diaz