Robbie Blake did not mince his words after Bognor fell to their first defeat in seven games against Enfield.
Two second-half goals sent Rocks tumbling to a 2-0 defeat in BetVictor Premier against their play-off rivals.
The misery was compounded by the loss of influential midfielders Doug Tuck and Jake Flannigan to injury in a disappointing display at the Queen Elizabeth II Stadium last Saturday.
Blake was critical of the players after a below par performance left Rocks six points shy of the play-off places when a win would have catapulted them into the top five.
And he expects a response from Bradley Lethbridge after singling out the attacker for criticism.
Coach Blake said: “It was an important game and not enough players turned up on the day.
“We had about three players who deserved a little bit of credit out of the game and eight who were nowhere near up to scratch and that resulted in us getting a well deserved loss.”
He added: “I told Bradley after 28 years of playing at all levels apart from non-league that he’s got the worse body language I’ve ever seen.
“I’ve told him that and how he takes it is up to him.
“Good players and strong players come back and show what they can do and stick two fingers up at the coach. We shall see what he does.”
Enfield took the lead three minutes into the second half when Billy Bricknell’s cross from the right beat Keaton Wood in the area before it fell to Lewis Taaffe, who bobbled a shot in under Amadou Tangara.
The hosts wrapped up the win with three minutes to go when Ken Charles latched onto a long ball, beat defender Matt Casey before patiently making his way back into the area to slot beyond Tangara with a low strike into the bottom left corner.
Tuck came off with a heel problem while Flannigan pulled up with a hamstring injury in the first half.