Hi,
http://community.spiceworks.com/how_to/show/179
A howto on using the WMIC to remote uninstall applications.
Could possibly make a script to iterate all valid systems, I had less then 50 so I just threw all the commands into notepad and would copy/paste the lines to execute (I had 5 script windows open to handle them as execution times would vary between which system being called)
/node:<system_name> product where name="Symantec Endpoint Protection" call uninstall
https://www-secure.symantec.com/connect/forums/uninstall-client-remotely
http://community.spiceworks.com/how_to/show/1955-uninstall-symantec-endpoint-protection-remotely
http://andrewblock.net/2011/03/07/how-to-uninstall-symantec-endpoint-protection-11-without-the-uninstall-password/