I did not sree the game I could not find a stream on the internet at that time.
I could only see the highlights! (on U tube.)

For me the problem of their goal was a matter of ''who is taking command at the center of our defense? If it is Long ,then not only is he a defender but he has in that position to take full command of defence. In general it is 'Tarkowski' but he is out ,and could be out,for a lot more time? Long is relatively new to the defense,its like a new player then telling the others what to do in defence ? But in that position it must be! He must be given that task and all must know it !!

When a South'pton player, came with the ball attacking our defence, from the right wing. Long ,Dunne, Westwood,Taylor Stevens all were watching that player with the ball, yes, keep your eye on the ball at all times,but KNOW who you are marking/covering also. (At this point nobody knew what ,how ,who to mark or cover!) It was not the total the skill of Ings or Adams, just our players not really knowing what will/was about to happen?

Then the fun started when Adams started to move forward a little to the right towards our goal. At this point Dunne was 2 yds from Adams.(Westwood was 3 m from Ings) Adams looses Dunne who is still watching the player with the ball.
Dunne is not covering Adams or watching him move.
(Again at this point Westwood should have been told to cover Ings. Dunn to take Adams !) That would have left Long in the center of defence ,covering all that area, just in case if any other attackers were coming in goal hunting.( Djenepo was also around!)
Adams then moves into attacking mode, which leaves no option but for Long to go and 'take him'. Foolishly Dunne chases after the ball and Adams,which leaves Ings wide open For me all this play is because of players not knowing what to do!! Who to cover /mark etc,they are playing in the dark !

There is confusion in our defence. Solve that and then await our results.