Stopping J2EE Application on some server nodes, not using Visual Admin

I am trying to have one J2EE application, only run on two of the four server nodes of our EP 6.0 SP 9 system. When we restart the Portal, the application automatically starts on both physical servers and each of the two server processes on those server. I can use Visual Admin to stop two of the processes or I can use Telnet > Add Deploy and stop_app, but I would like to not have to manually do this for each restart.

Do you know if there is a way to only start one instance of the application on each of the physical servers? Is there a "script" that I could run to shutdown two of the four if all four start?

Other ideas?

Thanks!

Stephen Emerson