West Ham manager is on the brink.
Crooks said that Bilic's downbeat post-game interview demonstrated to him that the West Ham board should make a change.
He said: "I have been a big supporter of Slaven Bilic since his arrival at Upton Park, and supported him through the difficult transition to London Stadium, but after his post-match interview I think Mr Gold and Mr Sullivan may need to save him from himself. It's becoming torturous."
Bilic had said after the game that his situation was 'very difficult', admitting he was under pressure.
West Ham have now slipped into the relegation zone and sit in 18th position after Bournemouth's surprise win away to Newcastle.
The Hammers have won just two of 11 Premier League games this season and have the joint second worst goal difference of any team in the division (-12).