#0 - June 22, 2007, 4:07 p.m.
A hot fix has been applied. Unstable affliction cannot be removed by using Horde or Alliance PvP medallion trinkets.
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[Original post - 22/06]
“The PvP trinket currently removes Unstable Affliction, despite the fact it does not fall into the "Movement impairing/Makes you lose control of your character guidelines."
This is an issue we are aware of. It will be fixed in a future patch.