So I am just about done with A Dance With Dragons, and I have a question.  Whenever Jon treats with Tormund Giantsbane, Jon says that the Horn of Winter was burned, Tormund responds that they never really found the real horn. So I'm going out on a limb here, but: could Euron Greyjoy's "Dragonbinder" be the real Horn of Joramun?  I know that Dragonbinder has Valyrian glyphs and the Horn of Joramun was made by the First Men, but could it still be possible?