Complex sentence: Their job is to get in close to the bull and distract it from the dismounted bullrider and any one else in the arena, as well as to release the bullrider's rig, and rescue any "hung-up" riders.
Split into simpler sentences: Their job is to get in close to the bull and distract it from the dismounted bullrider and any one else in the arena. As well as to release the bullrider's rig, and rescue any "hung-up" riders.