I found an extended version of the clip here: https://www.liveleak.com/view?i=e2b_1484064564 - The toll booth attendant initally walks out of the wreckage and is then carried off by coworkers. He's lucky the truck just clipped the booth so he was only struck by the flimsy booth, versus being hit by a truck.
This is another example of why drivers need to pay attention to road conditions.