The tazing was appropriate.
I am a cop. 9 weeks ago, I got in a chase with a drug dealer and fell and broke my arm at the elbow, requiring surgery, permanent rods, and (so far) 2+ months of physical therapy. If I had had a tazer, I could've ended the chase before it got started and not have to worry about arthritis in my arm for the rest of my life. what if the guy chasing this moron had fallen gotten hurt? did you think about that? some security guy gets hurt because this guy decides it's cool to be a jackass.
ever heard of terrorism? what if this guy had gone onto the field with the intentions of seriously hurting someone?
people don't think about the consequences of their stupidity. I'm glad he got tazed.