I'm not normally one for blaming it complaining about refs, but it's hard to argue against this performance not having impacted the result. Number 9 was a thug, pure and simple. He was getting nothing against Piergianni and so decided go give him an elbow in the face. It was the most blatant elbow I've seen in years, and I would guess not one person in the ground missed it. The fact that he stayed on and pulled Piergianni over to LB means he continued to have a considerable influence on the game, long after he should have gone. He went on to commit several other offences worthy of a yellow card, including a ridiculous dive before he was finally booked. On the other hand, Mark Jones was booked for the first minor infringement he committed. I can only guess that the ref was frightened of him.
Of course, he didn't cost us a 2-0 lead, we played our own part in that. But to say him staying on the pitch didn't contribute is simply disingenuous. Without their main arial target and with Piergianni freed up to defend against others, they would have been completely dofferent proposition.