I think there are to many players at that club who live comfortable lives and are winding down careers, lots of British lads as well so wouldn't be surprised if there's a bit of a drinking culture and a lack of professionalism from some. I don't think a guy like Pardew helps if you've got a few guys who like a drink because he will try and harness that but I don't think that sort of team bonding works.
They looked to me like a team who were being poorly coached under Pulis they were built on a tight defence, Pardew attempted to change that but changing that mid season with the same squad is impossible because those players are not good enough to play another way.
You have to question how many players at that club really care about it as most of them probably think they'll be straight back to the PL or Europe if WBA go down.