He spawned for me on 15 Dec. 20 at location -288,+904,+5. I was standing on his corpse when I marked his coordinates. That is a static single mob and is the Southernmost Grendlaen on the West
side of the zone, not far south of the Grendlaen cave. PH's there were alternately a Ferocious and a Wicked. He spawned for me from a Ferocious. Dropped the Bloodsteel Blade. Hope this helps.