I think in certain instances instant replay can and should be used. The eyepoke loss by Anthonly Johnson could have easily been reviewed and had the fight restarted, overturned the decision or made it a no contest.
I don't like instant replay in fighting. I won't lie, I didn't read the article. But, I don't mind it maybe when the commission reviews the fight...but not right after. It is fighting, and accidents happen. Most of the time, eye pokes are an accident. Over turn the fighter, after the event. Don't stall the show and suck the excitement out by doing instant replay, during it.