I am actually reluctant to think of ways for HP to escape, because I am kind of rooting for LV in this fic. Sure, he is ruthless and stuff, but he seems to be way less dangerous than Harry, who is prophesied to destroy the world. LV just hates stupid people. Plus he has all but made Hermione immortal, and she the only voice of reason in the story. And he likes gazing at stars, and is against nuclear weapons. A competent ruler is such a rarity. As kings go, he would be considered cute.