The cleansed Ashbringer, which is just named Ashbringer, has never, ever been in player hands. The rumours said that you could cleanse the Corrupted Ashbringer, but they were all false.
Well no not really. Alliance players do get a chance to hold ashbringer... in a certain obscure way. There is a quest in Howling Fjord called "Guided by Honor" where a player is tasked to retrieve a "sacred artifact" from Utgarde Catacombs. Upon returning it to the camp site, a closeby masked cleric reveals himself to be none other than Tirion Fordring himself and equips the artifact which turns out to be Ashbringer.
So yeah people do get a hold on it for a while. I wouldnt be suprised if some serious lore junkies would get out of their way to start this quest and never finish it just to keep their hands on it in hopes blizzard might do some bizzare update to this quest where that quest item will be ashbringer with some timer on it.