Use Altiris 7.1 to Uninstall Microsoft Forefront

Hello all,

     We are moving on from Microsoft Forefront to Symantec Endpoint Protection 12.1.6.  In our small test deployment we haven't had any luck removing Forefront using the built in uninstall competitors option via SEPM.  So I'm looking to see if we can utilize Altiris.  We didn't create a managed software item for Forefront as it was just part of the image.  When I go through the import software of the .exe that we use FEPInstall.exe I only see the install option.  Is there a way to add the commands to do a silent uninstall?  I've looked for commands but can't seem to find for this EXE.  My thought would be to create the policy to uninstall forefront then use the SEPM to push out Endpoint.  Thanks for any help and tips.