i just wanted to point out, if that bird is seen by this person to get healed, in the photos, the toes were turning black, thats a sign that the tissue is dying. this bird will likely lose its toes at this point, so i do hope the person who took him in does get him to the vet and doesnt try home treatments as its possible to lose his whole leg. its a birds natural response if there is risk of infection in the foot the foot will "die" and fall off. it is a natural defense to protect a bird from systematic infection.
at least your friend tried, its better than nothing at least, and who are we to put down their efforts? they could have just let it be instead of actually looking for help. yes, its a sad and less than ideal situation, but its better than doing nothing.