Due to mis-recording in the second episode and several typos from guide book, Aniplex decides to do recall for the defective disks. This isn't the first time Aniplex did mistake - Ore Imo booklet, Kara no Kyoukai Box, Shiki CD.... but recalling Blu-ray disk itself is quite out of ordinary.
But of course, that recording mistake was pretty hilarious. Shaft won't lose much from this, but Aniplex/Sony will get some damage. Well, I don't really care since Aniplex is evil.