NPC Spawn Issue: Golem not spawning Iksar broodling?

[Daldaen]

What evidence do you have of them spawning 100% of the time?

A quick Allakhazam search under Iksar broodling pulls up this:

November 2001:

This guy spawns on top of the dead golem (Dread, Terror and/or Fright). Has about 15 hp, hits for 4 (folks were teasing one: taunt, then med, get hit, taunt, med, repeat until the shaman comes back from the bathroom or is rezzed). Does not always spawn on top of the corpse. Took me 4 fear raids to get one (and that night we dropped all 3 golems and got 2 broodlings).

Implying it isn't a guaranteed spawn.