The name isn't likely on the books themselves. It was on the file submitted to the WorldCat database. These kinds of database problems happen a lot; it's how quickly the company fixes them that separates the wheat from the chaff.
When a friend of mine's new children's book was first listed with the online booksellers, another book title got appended to hers....a how-to sex book title! Her publisher fixed their file (which was where the error occurred) immediately, and the online sellers fixed their listings immediately, too, instead of waiting a few days until the new file came through and updated the databases.
PA fixing this 'immediately'? I wouldn't put money on it!
(Oh, and yeah, we got a screen capture of the Amazon listing before it was fixed because the concatenation of the two titles was screamingly funny. Unfortunately, the capture is on a hard drive that's up in the attic so I can't pull it up to remind myself exactly what it was.)
ETA: Oh! I found the concatenated title in a listserv archives: "Play, Laugh & Learn, Celebrate the Seasons: Take Sex and Sexuality to New Heights"