How can I stop my object pool from firing?

I have a pool of bullets, and spawner attached to my gameobject. Now, when the parent gameobject is set to active = false, my spawner, which would be the script attached to the gameobject continues firing bullets. My code comes form the live training video (http://unity3d.com/learn/tutorials/modules/beginner/live-training-archive/object-pooling). My question is how can I disable the spawner from firing the bullets from the pool when the gameobject is "killed".