Watch the highlights of the game and listen to a very disappointed Town boss - and it wasn't his players that he was disappointed with.
Speaking on iFollow Mariners, he said: "I’ve got a very experienced member of staff with us who very rarely comments about much at all unless asked, and he used a word that if we used it now would get us in trouble.
“I know there are some famous names sat in that stand over there. Not a crowd influencing him.
“That was unacceptable today. Absolutely unacceptable.
“There’s a clear handball, and I ask at half-time, he has got no clue of what incident I’m talking about.
“We then have Harry Clifton going through one-on-one, and the play is brought back, and we get a free-kick. There was no foul, it was two players having a disagreement.
“I’m just at a loss if I’m honest. We haven’t lost the game, so it isn’t about that.
“I’m not sure what’s happened in terms of the officiating. It’s not the first time, but that will live long in the memory for the wrong reasons.”
Watch the incident and more from Paul Hurst on iFollow.