The 'Terriers' secured a 1-1 draw against Chelsea on Wednesday night to ensure their stay in England's top division continues for another season.
It means their final match of the season, against Arsenal, is a dead rubber and Huddersfield will be understandably nursing a hangover following their celebrations after the Chelsea game.
Speaking about their survival, Schindler told the club's website: "Everybody thought we were going to go down. Not of course in our dressing room or our club, but a lot of people that watch the Premier League.
"It's just unbelievable, it's going to need a few days or weeks until it sinks in. We thought this point against Man City was not worth anything. To get the point here as well is just unbelievable. I feel empty, I can't really get it that we've made it after that result (at Chelsea).'