Ok this is similar to the other anti-thrash strategies ive found on mmowned
(http://www.mmowned.com/forums/wow-ex...-akil-zon.html
http://www.mmowned.com/forums/wow-ex...made-easy.html)
The thing my guild did was have a shaman put up totems @ the buttom, the place where the lookout is.
What happens is that the event will bug and the tempest will disappear and only the normal thrash will be in the way.
This has worked twice for us.
Cheers