I don't see Out of the Abyss as an epiphany at all, but rather a culmination of that sound. In fact, the reason that Rick Fisher left the band was because Shelton desired to play faster, more aggressive material, and you begin to hear that on Open the Gates with "Heavy Metal to the World" and continuing on ("Death by the Hammer" on Mystification for example). OotA is a byproduct of aggravation with certain label issues as well and has a naturally more aggressive edge, with a lot of lyrics dealing with violence and weird fiction issues, whereas the preceding album focused more on the...uh, mystical aspects of the likes of Poe rather than Lovecraft. In that sense I don't feel that it is forced at all, as there is a clear building up to that. It's almost as though it's something they needed to get out of their systems as we seem them return to the more epic nature of Open the Gates-The Deluge in large part on The Courts of Chaos. All in all I think it's a bit of an underappreciated album due to the fact that it's perhaps the least prototypical of their 80s material.