Long story short, the band's ADAT machine ate the tape containing all the guitar and vocal tracks during mastering. What VOC has released is essentially what they could salvage. Or as they describe it: a master made from a cassette tape. You can read the entire sordid tale at the aforementioned Bandcamp page.
VOC concede that this version is not what they had hoped to unleash. But they are also adamant that it still rawks. And based on what I've heard, I'm inclined to agree. Here's a track from the record called "The Getting Place." Somewhere, Layne Staley is smiling.