Checking a server that installs a variant of Trj/Cimuz, I came across a link that pointed to remover.exe file:

After analyzing the code of the file, I noticed that it uninstalled the same variant of Trj/Cimuz that had been previously installed from that very same server.

I suppose this is the way the author uses to make tests in order to check if the Trojan works properly and then, get easily disinfected using the uninstaller.