User blog comment:Hyperborean/"The House of Hades" – official expectations blog/@comment-5648328-20130311165142/@comment-3146930-20130313034918

They are first taking the statue to Greece as returning it to the Parthenon will somehow help in defeating the giants. Then they will return the statue to Olympus, maybe by Hermes Express.

"First we’ll take the statue with us to Greece. A prophecy told us it has the power to help defeat the giants. After that…well, we can’t simply restore it to the Parthenon. That would raise too many questions. It’ll be safer in Mount Olympus. It will unite the children of Athena and bring peace to the Romans and Greeks..."