The Collider is like a play toy for scientists. They just harnessed antimatter (for a millisecond). Next they will pair antimatter with matter just to see what happens. Of course, they will say everything is under control; just like the mad scientists do in the movies.
Problem is, their experiments are not confined to a simple test tube nor is this a formula on a blackboard. Their mini-experiments will get larger and more complicated, and each succeeding experiment will put the planet in greater jeopardy.
In fact, I think this could be the 2012 debacle everybody is predicting. I don't think this is a good idea.