I voted No, but then I remembered that under the terms of the experiment as well as for practical purposes, there are things far more subtle than merely pushing a "Release" button that would count as releasing the AI. That said, if I could I'd change my vote to Not sure.
Update 2013-09-05.
I have since played two more AI box experiments after this one, winning both.
Update 2013-12-30:
I have lost two more AI box experiments, and won two more. Current Record is 3 Wins, 3 Losses.