"We can only officiate on the action itself and what he did merited what happened next because it was dangerous.
"Did he mean to do it? Was it intentional or unintentional?
"We don't officiate on intention, we officiate on the action itself.
"Unfortunately, what had happened gave me no option but to do what I did.
"Any time you make a decision, 50 per cent of the people think it is a great call and 50 per cent of the people say 'How did he come to that decision?'. That is just the way it is.''
He added: "The thing you have to remember is that straight after the game there was huge emotion everywhere, which is understandable.
"But in time, maybe in 10 or 15 years, it might calm itself down.''
Rolland praised Warburton for admitting recently that he deserved to be sent off.
"I think it is a true measure of the man he is,'' he said.