Accidentally broke Win2003 with agent

We recently pushed out the management agent to our workstations, and I
forgot to put in an exclusion to prevent it from installing on our
Windows 2003 servers. Now we have one server that will not let us connect
via terminal services. The error in event viewer is as follows:

EventID: 1014
Cannot load illegal module: C:\WINNT\system32\drishti.DLL

Is there anything I can do to reset the terminal services functionality?
I'm sure this is caused by the agent installation, and even though I've
uninstalled it the error remains.

Thanks,
Vince