Harry witnessed Professor McGonagall walking right past Peeves, who was determinedly loosening a crystal chandelier, and could have sworn he heard her tell the poltergeist out of the corner of her mouth,
“It unscrews the other way.”
That was then. And you can strap up your leg and put your mask back on. But that doesn’t make you what you were.
"And make me the luckiest bastard on earth."