If I recall right, that's just how he was when he played against Fulham last year. As someone else asid, this may be bad news for Curtis Davies!
And also for Cuellar and Collins
I don't think he'll keep Cuellar/Collins out the side for too long, he was good today, but he had it easy against Cole and West Ham who were poor.
Cole is not an easy striker to defend against. He's strong, but not John Carew strong, and Clark seemed to do just a good a job as Cuellar or Collins would have done.