As an ex (qualified!) referee, who took it up when i couldn't get over playing injuries and also after sleeping on this, then, then attempting to remove my blue tinted glasses as best as i could.
Neither of KW's challenges warranted a yellow card, despite what people regularly scream over here, not every foul is deemed a frickin yellow card! Football is a contact sport, or was the last time i looked at the laws of the game, but the current crop of officials, who are by the way the worst in living memory, wouldn't know a hard, but fair challenge, it they viewed the playbacks constantly all week!
Are the corrupt crop of officials bent/corrupt, i really am not sure, but i do believe they have their favorites and we are simply not on anyone's list as those! Are they totally incompetent, absolutely in my opinion, when Keith Hackett (Compared to today, he would be rated a decent ref by the way!) comes out and says pretty much that, it speaks volumes! What used to be the pride of the world are now the 2nd poorest in the world, behind MLS ones if you were wondering, of whom you have to watch to actually believe, but in my opinion they are just incompetent and have no agenda's ........just yet!
Incidentally i also didn't think the yellow for Tom Davis for diving was a yellow!