Hayes told the press after the game that the players felt they had been disrespected by their opponents.
Aberdeen travelled to the Netherlands after a goalless draw at Pittodrie with some Dutch players suggesting ahead of the second leg they had one foot in the next round.
And Hayes said: "We had a tie a couple of weeks ago where we were 5-0 up after the first leg and we still wouldn't have come out and said the tie was over going into the second leg, so we were a little bit riled up.
"We were a little bit disappointed, we thought it was quite disrespectful of them to say that.
"We didn't need any extra motivation but I was quite happy ramming their words down their throats."
Source: BBC Sport