Vestergaard was at fault for all 3 goals in my opinion.
The first goal is obvious.
The second goal Barnes was his man to pick up, he was stood between the 2 marking nobody, he had no idea where Barnes was and as a result was completely beaten by the cross which he made no attempt to defend. Bertrand also should have given him a shout and told him to pick Barnes up.
The 3rd goal he got bullied out of what should have been an easy header to win, and then too slow to get back and defend, didn’t make any attempt to tackle or at least block the shot once he got close.
Useless player.