as fare as I know, on Windows plug-ins will stay in the location you install them from.
for mac it might be different.
there is not much info about pc.
I think disabling (Plug-in Manager) and deleting / hiding (renaming) the installed file will already do a lot.
Some info about plug-ins is also stored in the Registry.
There is a Guid in the assemblyInfo.cs of your Plugin
[assembly: Guid("....")] // This will also be the Guid of the Rhino plug-in
(make a backup before you edit anything …)
open regEdit
search for the Guid
talk a small coffeebreak…
the key might look like this:
HKEY_USERS\xx-xxx-xxx-xx-xx\SOFTWARE\McNeel\Rhinoceros\6.0\Plug-Ins<your guid>
delete it on your own risk
search again, delete again - not sure if there is a per user and a general entry…
the other approach is to test the installation on a virutal machine or some other sandboxing… (thats my approach)
also disabling the plug-in and changing the Guid might work… but not sure on this
(AT)Dale would be the person to ask I guess…
would be interested in your solution - thanks for any update - kind regards - tom