For the heck of it, I looked up Cyclone on WoWWiki. This is what it had to say:
http://www.wowwiki.com/Cyclone
Quote:
Notes
Affected by diminishing returns, both in PvE and in PvP.
Very few mobs are immune to cyclone, very useful in instances to disable the mob that is going after your healer. Most groups will not like you doing this though. A good rule of thumb is this: if you can stun it, you can cyclone it.
If you cast Cyclone on A then immediately cast it on B before Cyclone effect fades from A, A will break free at once.
The target is completely locked down: paladins can't divine shield out of it, mages cannot iceblock out of it; however all PvP trinkets can negate the effect.
The effect is typeless, thus no one can dispel it.
Any aura or passive buff granted by the affected player or mob to other players or mobs will be temporarily negated until the effect ends. For instance if you cast Cyclone on a warlock's pet, Soul Link will be removed from warlock and his pet until Cyclone's effect ends. Paladin, Druid, and other auras are affected in the same way.
Additionally, DoT (and most likely HoT) effects are also negated for the duration
Bolded part, maybe?