I don't think those images are a hoax. Image number two is with the patient prone on a neuro operating table. The clamp can be seen on the right (patient's left) and the ventilator tubing running on the floor underneath him. This would be after the anaesthetic but before the scrub. There is even the shoulder tape that they use to secure the guy to the table and get the shoulders down. A hoaxer wouldn't know this and he wouldn't have access to the operating room equipment like that.
I looked this up a bit more and I found a report on this incident:
http://www.texasarchery.org/images/Overdraw/dangers.htm
They say he was shot by his brother, and the release was not complete. That's why the penetration was not so deep.