Laws and what-not aside, my understanding is that regardless of whether it was a right or wrong call, there was sufficient confusion for the skipper (Higgers) to ask the ref to get the TMO to quickly have a gander and give the all clear or not.
That the ref decided not to is probably more of an issue.
I understand that going down that path means potential for every call a ref makes to be referred to the TMO by the captains, which none of us would want to see. But in this case, there was an environmental item out of the control of all concerned added to the game (additional white lines) that may have contributed to the outcome.
I just think that for the sake of making sure neither team has been incorrectly penalised, the ref probably should have looked a bit closer during the stoppage.