Depending on what version of SEP is installed, in MR2 and older releases if you check the TCP/IP properties of the NIC you should see the Teefer2 driver listed. You can then uncheck the box to disable it. This feature has been removed in newer builds of SEP however.
I have also had good success in removing Teefer2 by uninstalling the NIC from Device Manager and then restarting the machine. Windows should be able to automatically re-install, however you may need to have the NIC drivers handy.
RemoveTeefer.exe is another good option, however this would require that the client is installed on the machine as the utility needs to call on the MSI to complete removal. There are a few other criteria that would determine if this is a good candidate for this particular machine. This would require opening a case with Symantec Technical Support.
There is a manual removal procedure for getting Teefer2 removed from a machine via registry editing. This can be quite confusing for someone not familar with what they are looking for and the keys to be modified would be specific to the client machine, meaning each system having the issue would have a different set of keys in the registry, so you would certainly want to open a support case should you wish to go this route. Most likely an export of the registry would be needed so that it can be mined for the specific information.