It can target the kiter when they aren't actually fixated. The iron star occasionally retargets its fixate and drops it for about a second. I think it has a chance to happen on the third and fifth malices?
We had a rogue kiter on our first kill but he died early in p4 and our disc priest ended up kiting for the duration of the phase and had no issues. We were 2 healing and the other healer had no issues keeping the raid up solo at that point. The damage in p4 is easily handled as long as people deal with malice correctly.
<Uchirosan> Day 1 Prot Warrior
Obsidium of Thrall 7/7M Highmaul 9/10M Blackrock Foundry