In my opinion the main problem with your squad is a lack of mental toughness. You have lots of skilful players but last night after the head patting incident your team just fell apart. Connor, Sneyd, Houghton the spine of the team just disappeard and made basic errors. Knock-ons, poor kicking, passes going to ground. Just when you wanted them to stand up and be counted they failed you miserably. Top players perform when the situation is difficult just as the Wigan players did at the start of the first half.
Your main need is a coach that can instil that mental discipline.