Yes. You can use IP Filtering on the NIC where you want to disalbe it and make sure that TCP port # 3389 is not allowed.
To access IP Filtering:
1. Right click my network places and click Properties
2. Right click the adapter where you want to disable Termianl Services, click on properties
3. Highlight TCP/IP and click Properties, Click advanced, click Options, Highlight TCP/IP filtering and click propertis.
4. On top of TCP Ports click permit only and click add.
5. Add all other protocols you want to allow (HTTP=80, FTP=21, SMTP=25, POP=110) this will allow other traffic to work on this computer. Since you didn't put in 3389 no one will be able to use TS from that adapter.
An easier way to do this is using a firewall between your adapter and the network and blcok port number 3389.