Well application execution is not exactly what SNAC is meant for - some reference:
http://service1.symantec.com/support/ent-security.nsf/docid/2007090400355348?Open&seg=ent
https://www-secure.symantec.com/connect/forums/what-symantec-network-access-control-client
The Symantec Network Access Control client evaluates whether a computer is properly protected and compliant before it is allowed to connect to the corporate network.
The Symantec Network Access Control client validates and enforces policy compliance for the computers that try to connect to the network. This validation and enforcement process begins before the computer connects to the network and continues throughout the duration of the connection.
However.... under the Host Integrity templates -> HI Sample Toolkits you should be able to find one template for termination of applications with certain fingerprint - maybe this can help you a bit. Still searching if I can find any other preconfigured templates...