Look at the Arsenal players compared to Villa's after the second goal.

If this was the afternoon when Arsenal let it slip then Mikel Arteta will know they only have themselves to blame. Handed the perfect opportunity to lay down their title credentials after Liverpool had been surprisingly beaten by Crystal Palace...a hammer blow to their chances of ending a 20-year wait to be crowned champions.

... just as Arsenal’s young side showed their fallibility this time last season to allow Manchester City to overhaul them, they will fear that those failings have returned at precisely the wrong moment after disastrous defending...

...

 ...after the break...the anxiety of the home supporters began to rise. 

It has been my impression of Arsenal under Arteta that they play too tight. That obviously flows into and back from the fans. You cannot shrink in these moments and Arsenal has two years running. You must be bold; Arsenal has been meek.