Complex sentence: The band originally intended for the album to be produced entirely by Mike "Clay" Stone, but Stone's abysmal producing of the album, from the DAT tape recordings, prompted Atlantic Records to bring in Beau Hill to assist Stone and salvage the album.
Split into simpler sentences: The band originally intended for the record to be produced entirely by Mike "Clay" Stone. However, substandard DAT tape recordings of Stone's production efforts prompted Atlantic Records to bring in Hill to assist Stone and salvage the album.