I don't like to defend Jordan too much, but what you are saying is that he should have known that Mina was going to get totally bamboozled by some Joe Average and then make no attempt to put in any kind of recovery tackle/block?
There does seem to be some serious lack of voice in our backline, perhaps that why Carlo rushed Mason straight back in to the starting X1 last week. For their 2nd goal, neither Keane or Mina are marking anyone, exactly the same as what happened against Utd for Fernades headed goal - Its criminal