I couldn't quite tell for sure what is was or who he pulled up on his back right at the end of show, maybe he does have Ben. I can't see Locke lugging around his dead dads body.

__________________
Standing in the ocean with the sun burning low in the west
Like a fire in the cavernous darkness at the heart of the beast
With my beliefs and possessions, stopped at the frontier in my chest
At the edge of my country, my back to the sea, looking east