http://www.wowarmory.com/character-s...n=Last+Attempt
Is another one brought to our attention from Tural
http://www.wowarmory.com/character-s...n=Menthuslayer
Explain plox
EDIT: We have discovered it was not a faction change.
It could be something as simple as having the ring in the bank.
It could of been massive lag/dc as he turned in the quest.
He could of been in combat while turning in the quest making him unable to un-equip the ring. Or something.