EtherDelta would do nothing about it because its already set on their rules that they don't  hold your private private key for you and you and only you are responsible on your own security.
I may say on how will you determine the owner of it, you can track him down track every transaction heshe made and figure it out on how will you get on touch on himher. But if i were you i will not waste my time looking for that scammer and try to get my token back, why It is because if i were to track that hacker and get touch on him or her, i don't have any idea what to do next would i beg for my token or use foul words to make me satisfied if i do these things is there any changes any improvement or any earningsI may say its totally waste of my time...  So better move on and make your mistake a lesson and a warning for everyone to avoid this kin of situation.