User blog comment:Hyperborean/"The House of Hades" – official expectations blog/@comment-10750309-20130714144850/@comment-3146930-20130714150716

Unless the Giant was there taking things apart or breaking them, I don't think he was responsible for the curse. The curse was most likely just caused by the overall depression of the cabin after the loss of Beckendorf. They become depressed, missed tiny details with their creations, and they go crazy. They then start focusing on these mistakes and as a result, start making more and more.