Ninja'd DBW, replaceable?

After a friendly ICC 25 pug with a few of my guild members we managed to to Deathbringer Saurfang. After downing him successfully the trinket that nearly every physical dps class wants is linked in raid chat fro main spec roll, Deathbringer's Will. I ended up rolling a 25, sad roll but it ended up being the winning roll, apart form two other rolls an 86 and 75 or something along those lines but they were just thrown in for fun as both of the rollers already had the trinket. The raid leader must have had some kind of confusion in the rolls and passed the trinket to another one of the rollers.

I consulted both the raid leader and the recipient of the item. The raid leader then told me that he realized he made a mistake and would ask the player to swap the item over to me. At this point I had also contacted the player who received the trinket by mistake and he must have also realized it was a mistake. Some point within the next 30 seconds or so the raid leader had contacted him asking him to trade the trinket. The player then offered me 8k gold for the item while he still had it in his inventory, but I declined his offer and asked for the trinket. As I went to open trade with him I received the message "This player is logging out". I asked in in /s to please not log out but as the message went out his avatar disappeared and wasn't seen for the duration of the raid from there on.

Both myself and the raid leader put in a ticket explaining the situation, how it was a mistake, the player knowing it was a mistake and how he was asked to trade the item to the rightful winner before logging off with the trinket still on his account.

I would like to know if this item will be restored to me, as I won the item through Blizzards default loot system very fairly, with no strings or loop holes and it is fairly obvious to even the simplest of minds that the current trinket holder stole the item from another player(myself) and logged off with it still on his account. If it will not be restored I want to know why? And how exactly Blizzards logic system works with situations like this. If it cannot be restored to me, I would like to know what Blizzard plans on doing in the future to eliminate these problems form happening because I know for a fact I am not the 1st or probably in the top 10,000 people this has happened to.

Thank you :)