The bent bar itself wouldn't have anything to do with sloppy steering, it would cause the tires to be toed in, but that would be fixed up quickly by adjusting the tie rod.
Look at all of the areas mentioned above, if it's sloppy something is loose/worn/broken.
Look at tie rod ends, drag link, steering box, etc. It can also be that the frame where the box mounts is cracked and allowing it to flex. Another potential area is worn wheel bearings or worn out suspension bushings, but tie rod ends, steering box and drag link are the first places to check. Just have someone sit in the truck and rock the steering wheel back and forth, you should see where the play is while watching each joint.