There was a lack of leadership, lack of togetherness.
What's more, the result leaves Wenger's side seven points adrift of fourth-placed Manchester City, with eight games remaining. Mutual decision to be taken at end of season.
The fans were furious as Wenger's side hit a new low in south London when struggling Palace condemned them to their heaviest Premier League season defeat.
"I'm deeply disappointed because the performance we produced was not good enough", Wenger told Arsenal.com.
But Carragher believes that Walcott only came out to save face for himself and that this type of performance is typical of Arsenal's players. We played with a desire to win the game tonight, with a very offensive team because we knew we had to score goals. "It's the fact that we lost a big game, and when you lose a big game it's a big worry". It's very worrying and disappointing the way we lost the game.
Hartson told 5 live: "When you look at some of the players that are taking the field, they are just not up to it".
"I think they just wanted it more", he added. He joined the club for the first of his two spells with them in the summer of 2004, when they were invincible, and he was a key member of the team that surged to the Champions League final in 2006.
Arsenal Supporters' Trust announced that the club have said that no deal is on the table, despite reports to the contrary.
Wenger has been under siege in recent weeks as angry Arsenal fans demanded his resignation and the calls for the Gunners boss to quit will grow even louder after one of the most chastening defeats of his 21-year reign.
"Overall, we created many unsafe situations but we couldn't score".
"We thought we had got out of this little patch and, hopefully, we haven't been dragged straight back into it". "I understand our fans are disappointed and we all are deeply tonight". And that's only going to come from hard work in training.
"What counts is how we perform on the pitch, the players and myself and I feel everyone is focused in the club to do it".
The Gunners need to turn things around quickly if they are to salvage anything from the season.