Glaston went a bit too far, which we've come to expect from him anyway, but now you're giving him a run for his money with a ridiculous statement like that.
Going down to 10 men, is never easy, psychological boost or not. When you play with one less body to aim for in the build up for 80 minutes it's very hard to even trouble the opposition most times, or just have a shot on goal, never mind scoring a hat-trick, and going close to scoring a fourth in the dying minutes, tormenting them all game. I don't know if it was 'superhuman' or not, but that was a damn good performance.
With hindsight that wasn't crucial for them qualifying, but in the event that both teams finished with the same number of points it would have been, which is why it was important at the time.