Agreed, i didnt see anything at the time and didnt looking at the highlights. There is contact and a small amount of holding but nothing worthy of a free kick and certainly nothing that would result in the tantrum he had during and after the game.
I guess we all see things differently but for me there was enough pulling contact to make him misdirect his control giving us the breakthrough - so a foul for me, but having said that I don't know what the issue with the 4th official was as my understanding is they have no power on a retrospective decision if the ref hasn't given it.