The smoke monster attacks Keamy's team

We got to see more of the smoke monster than we've seen before in "The Shape of Things To Come." Ben somehow summoned it to defend the barracks and we see it roll in like a freight train and swirl through the trees. Keamy's team can be seen/heard defending themselves, but their guns are useless. One guy gets dragged off by the monster, much like it attempted to do to Locke in the first season. I wonder if he ended up down a hole? What exactly did the monster do to Keamy's team? Also, did Ben just summon the monster or give it some kind of orders as well?