I'd been soloing Kael'thas on my hunter for Ashes of Al'ar for about 3-4 months and was lucky enough to get it last week http://eu.battle.net/wow/en/characte...achievement#81
Last week when I got the mount I wiped in the final phase (when Kael'thas goes up in the air) of my 1st try because Kael'thas mind controlled me as soon as he landed. I'd never seen this happen in this final phase in the previous 3-4 months. When I mentioned it to someone in guild they said it was because i'd done the previous phase too fast... This sort of made sense as I had better gear.
Anyway on the next try I took it nice and slow and didn't shoot at Kael'thas and just let my pet take him down to 50% with kill command and auto attacks. I didn't get MC'd, the boss died, I got the mount and I was happy.
Anyway this week I went back in to boost a friend for the mount but unfortunately the same thing happened in the final phase . I got mind controlled 3 tries in a row on the final phase. I'm sure I killed the boss slower than I had been in previous weeks because I used to shoot the boss in between "you will obey" calls while this week I only let my pet damage him. I should also mention that this happened even though my friend stayed outside the bosses room for the whole fight.
I'm just wondering if anyone else is encountering this issue (particularly hunters or other pet classes) and if you found any way of avoiding it.