Based on?
What makes you think the failure to perform comes from the players' relationship with Pardew and not any of the other possible reasons: adjusting to the Premier League, injuries, fatigue due to too small a squad, lack of confidence in general.
I'm not suggesting Pardew shouldn't be dealing with those issues too, but curious what evidence you have to suggest that the players don't want to play for Pardew?
Intuition. I can't prove it, I just think it and that it seeps through into every area of our game.
Even if they haven't; and they're all blissfully happy under his tactics, coaching and general tutelage then I still think he should be sacked because our football is fucking pants.