That Burnley game he was booed because he's Lloyd Kelly. The whole team were awful first half and played of the pitch by Burnley. They were all roundly booed off at halftime.
Kelly only came on as a second half sub, we immediately looked much better we got a goal back and Lloyd hit the bar with a header. With plenty of time to go, instead of just lumping the ball forward he still tried to play it out from the back. This started some booing, which got louder each time, then he made a mistake they got a goal. There were 11 players first half and other subs "obeying orders" they didn't get booed as individuals.
It's pretty much what Philip is going through, if we're losing whilst he's on the pitch, it's his fault, regardless : )