Unplug all USB tokens.

Stop Enterprise Security Client.

Log in as root, and use rpm -ev to remove the Enterprise Security Client RPMs in the following order:

rpm -ev ccid-1.0.1-5.i386.rpm
rpm -ev pcsc-lite-1.3.1-7.i386.rpm
rpm -ev pcsc-lite-libs-1.3.1-7.i386.rpm
rpm -ev ifd-egate-0.05-15.i386.rpm
rmp -ev coolkey-1.0.1-4.i386.rpm
rpm -ev esc-1.0.0-16.i386.rpm

Remove any files left in the installation directory.