That guy's problems are just starting. Feet don't heal well, and can hurt a lot. The fact that he has wood inside of his foot means that just pulling it out is not an option. After the main piece is pulled out, the wound will have to be explored to locate all of the little splinters and chips.
I once had a piece of tree that penetrated the front of my knee. Initially it was pulled out and the wound irrigated and powdered in the field. A couple of weeks later the damage was surgically repaired. It got infected with a fever and and antibiotics were useless, so they went back in and found some little tiny splinters. Spent a month with it open and being irrigated several time a day. Less than a month after it was closed, same deal again, this time they cut away a big chunk of tissue which did the trick. Basically, a piece of wood the size of a thimble sat me down for 6 months. The human body reacts very poorly to having wood in it. I can only imagine what this guy went trough or perhaps is going through over this. And where he lives, who knows what the quality of his care will be.