This clould be a whole thread on its own. Why would the divine one return in <img src="/ubbthreads/images/graemlins/div.gif" alt="" />² :
1. he forgot his hat
2. seems Punumbra has some bread in the oven (if you catch my dirft)
3. he misses the beer.
But here what I think will happen.
At the end of <img src="/ubbthreads/images/graemlins/beyond.gif" alt="" /> and soulforging has been undone. The DK will be much more powerfull than the beginning of tha game. So at the end of <img src="/ubbthreads/images/graemlins/beyond.gif" alt="" /> they go theire seperate ways (or the DK kills the hero or vica virsa). And the DK will become the big bad in <img src="/ubbthreads/images/graemlins/div.gif" alt="" />² with all his gained strenght from his battles in <img src="/ubbthreads/images/graemlins/beyond.gif" alt="" /> he'll probably be the stongest evil dude in the land. Just my theory. What I heared in interviews <img src="/ubbthreads/images/graemlins/beyond.gif" alt="" /> set the stage for <img src="/ubbthreads/images/graemlins/div.gif" alt="" />² so this could be possible. either way the end of <img src="/ubbthreads/images/graemlins/beyond.gif" alt="" /> will probably reveal the begin of <img src="/ubbthreads/images/graemlins/div.gif" alt="" />²