It took until other intermediate fossils were found. The detective work took time, but it was thorough. From the perspective of a creationist, Piltdown is a valid find and not a hoax, since the find was witnessed. Witnesses trump science, don't they?
Huh? I think you are mistaking the evidence for its interpretation. I know of no adherent of biblical creation accounts who would consider the Piltdown find as significant either way.