I can unlock it if you can profile reasonable proof via Coinbase that the account is yours.
Yes I can proof that its my account using the same bitcoin address.
The mail I used to open my Bitcointalk account I also used it to open my coinbass wallet. Also any campaing manager if say to you that I did work for his and we talked about my account Before it locked will you accept it?
Edited: I can also give you a Screenshot from my wallet after log in if coinbass support to take a screenshot.