The phrase "abject display" refers to a strong and negative showing of something, often indicating a complete lack of dignity, pride, or self-respect. Full definition
In truth, Jose Mourinho has also faced the same problem this year after abject displays against the likes of Liverpool and Chelsea, but he secured three trophies in his first season in charge last year and qualified for the Champions League. (caughtoffside.com)
Yes, Dean made a howler at WBA but that howler does not explain the teams abject display as we all know. (justarsenal.com)
Just very occasionally, and that is usually when the team has been rightly slaughtered for regular abject displays by not turning up and having their courage questioned. (justarsenal.com)