Dominus Disappeared

Ref# 3830061020

Playing my Summoner, I had 9 Zombies and 3 Undying Evangelist Specters and a Skeleton Totem. Did not use any snap shotting.

Links for minions at the time were:

Zombies, Increased Item Quaintly, Item Rarity, Multistrike, Melee Splash, Culling Strike
Raise Spectre, Spell Echo, Faster Casting, Increased Area of Effect and Concentrated Effect from Rime Gaze
Summon Skeletons, Minion and Totem Elemental Resistance, Added Chaos Damage, Spell Totem

I was not using the Vitality granted by my Corrupted belt, for got to swap to the uncorrupted version before running Dom.

Bad Setup aside, Dominus Fight started out normal, Killed the Mini-Bosses ok. Then Dominus came down and I got him down to culling strike health, or at least it appeared to be that low but Dominus didn't die. I died because I was not paying attention but Dominuses looked almost empty, I hit resurrect at check point and came back. Dom was not there and the adds from the elevator thing kept spawning.

http://imgur.com/a/Itnbe#0

I hit swap weapon while writing this up, and then I got disconnected after taking the above screenshots. Had a few drops so I thought I might as well run back and get them, When I got back to the top of the tower the last part of the Dominuses fight started, though it seemed a bit off. At least I have never seen Dominus, Ascendant come out of the ground here before.

http://i.imgur.com/ll8SDQG.jpg

I was a bit surprised to see Dominus to show up but was able to finish the fight with everything appearing normal besides his strange start location.