Naturally, just as you can damage rims and tires by missing with your maul. I can't tell you how many rims I have seen that have been damaged by tire guys that thought they were better with the maul than they really were.You have to be careful using vehicles, forklift forks or other things to break beads....sometimes you can damage the cords in the tire.
The key point to using an outrigger, or other moose powered method for breaking the bead on a tire, is to go slowly, and use your eyes to watch what is going on. If you can't see what you are doing, or it doesn't look exactly right, it isn't. Stop and readjust things until it is.
This brings to mind another thought: The difference between a high quality job and a poor one is the worker's ability to look and actually take the time to see what he is doing.
-Chuck