I think this is related. I did Heroic Utgarde Pinnacle last night and noticed that when Skadi whirlwinds and targets another player (and I successfully taunted him) it would last the 3 seconds and he returned back to the original player. I've tried to find out if he randomly changes targets throughout the whirlwind but according to WoW wiki/wowhead its only at the start of the whirlwind. It made the encounter a lot harder as the other players were usually stuck in a corner when he whirlwinded. Made us wipe a couple of times on what should've been a fairly straight forward run.
All your threats are belong to me