I agree to an extent. While there were a lot of things that contrived against us (We would not have settled for £20m from West Ham if we weren't cheated), we still had 38 games from which to amass 40 points from.
We failed to beat Villa at home despite being 2-1 up
Claude Davis failed to remember that he was a professional footballer when we were 1-0 up at home to Portsmouth
Warnock failed to strengthen the squad appropriately in January, thus the Hulse injury impacted so much.
We scored something like 3 goals away from home until January (which unbelievably contributed to 3 wins), while one of those goals was well offside (Webber v Watford).
We should have beaten Charlton away but instead missed chances and had to settle for 1 point.
I would say we contributed to our relegation a whole lot more than anyone else, mainly those in board level positions down to the management set up.
Copy and paste that last statement for 2010/11's glorious season.