Join the dots - what dots??

The papers are full of calls for Shaun Wright to resign.  Who he??  Well he was head of child services at Rotherham council at a time when apparently hundreds of young children were being systematically groomed for sex by a gang of Pakistani men, and it is said that he was, or at the very least should have been aware of what was going on, and did nothing.  Right - resign yes?  But the point is that he is no longer in that post and is now Police Commissioner for South Yorkshire, which Rotherham comes under.  And it is this post that there are now demands he resigns from.  Am I missing something - where is the connection?  If what is said about him is true, then he should certainly be apologising and grovelling and perhaps being put in the stocks and pelted with rotten fruit, but what has this to do with the post of Police Commissioner?  Do the allegations (again I stress, if true) make him any less able to carry out the duties of the post he now holds.  Why should there be any question of resignation?  I ask again - am I missing something?