Promised to post a screenie of the GM in Karazhan this friday who fixed the Prince for us. Sorry I haven't done it earlier, bit busy. Was kind of funny, we heard the Prince engage in combat and die several times, and I was waiting at Illhoof and he was behind me suddenly...I've never seen a GM in game so luckily I was quick enough to take a screenie ^^
Good luck!
Looks like a fun run.