No one heard from Igor after the Tournament. The students' story of his disappearance made sense to those on staff who knew exactly what he had been doing during those few years of absence from teaching, and no one attempted to contact him. Pilkin assumed headmastership and managed well enough.
Igor had kept a small cabinet in his office, personally cursed and sealed, stocked with fine spirits. Every morning, Pilkin tried to open it with a simple Alohamora, and every morning, the cabinet repelled the spell.
On the morning the cabinet swung open, the staff stopped wondering where Igor was.