AGF were a man down after just six minutes when Sanneh was sent off for a reckless tackle and the Danish outfit were hamstrung from there on.
Grabara was also booked later in the game and he was one of five AGF players who were shown a yellow card during the game.
Four Nordsjaelland players were also shown yellow cards in a game where tempers were running high on both sides.
Grabara revealed his frustration at the refereeing decisions that he feels have been going against AGF in recent weeks, though he later deleted his tweet.
He was quoted as saying in his tweet by Danish daily Ekstra Bladet: “We need the fans to come back to the stadiums.
“Personally, I am getting a little bored and frustrated playing 11 vs 12 every week.
“With fans, we can at least do it right.”
Grabara insinuated that Nordsjaelland were playing with an extra man, with the referee being their 12th man.
It remains to be seen whether the Danish FA take any action against the goalkeeper in the coming days.
The Liverpool loan star’s side sit in third spot in the Danish Superliga standings.
