You are right about stopping HIPS, but like I said, the settings on the ePO were configured to hide the application from the Add/Remove programs so I still needed to use the uninstall string from the registry.
We had the same issue and we found that the following solution assisted us:
There is a complete remover that removes all the mcafee products from the computer and then all can be reinstalled afterwards. It is also capable of removing HIPS when the client interface is locked.It is called MCPR2.EXE. You can find it on the following link. https://us.mcafee.com/root/fix.html
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