Well after about a month and a half, this event is *apparently* working again - had some other pallies report to me that its working fine now.
So off I went last night, and lo and behold - it didnt work again
So I petitioned (no swearing this time - learnt my lesson
)
The response I got was that I DID have all the correct flags, I HAD completed the event.
And for the winning response - That I had the "Drema's Soulstone" in my inventory, therfore this matter is closed !
The fact that the Soulstone I have is the container, and still missing the shard from Mujaki thou...
Have once again, re-petitioned this problem.