Dyche’s sacking on Thursday evening just as preparations were being finalised for the cup tie came as a real shock – not because it happened, but the nature of how it transpired.
Local authorities met at lunchtime to give the game the go-ahead despite freezing conditions on Merseyside, and the Friedkin Group’s bombshell decision was just as cold.
Dyche, the now former manager, had been at the club’s Finch Farm training ground in the morning before being informed of his decision in the afternoon and bidding farewell to staff.
Baines said he was then asked to report to the Titanic Hotel in Liverpool, where the players were meeting and informed of Dyche’s dismissal by director of football Kevin Thelwell.
Senior sources close to the club and the Friedkin Group have told BBC Sport both the ownership and Dyche felt they had reached the end of the road when they met for talks this week.
It is claimed Dyche did not know of the decision at Tuesday’s pre-match news conference, where he spoke about having “no problem” with the club “succession planning”.
And once he had told his superiors about taking the team as far as he could, change was inevitable and the group acted decisively to “relieve Dyche of his duties” at 16:32 GMT, shortly before the 19:45 kick-off.
“Sean was here this morning and I have never had that [timing of a sacking] before,” said Peterborough boss Darren Ferguson. “It is very unusual for a manager to be sacked three or four hours before a game. The timing of it surprised everyone.”
Everton supporter Chris and his son were at the Peterborough tie and told BBC Sport: “It was disrespectful to Dyche and the team, but he can’t do any more than he has done. Announcing it in the morning after the game would have been better.”
The brutal nature of the dismissal was further highlighted by the club’s official statement, external – no thanking Dyche for his service, or acknowledgment of the work done by him and his staff under difficult circumstances during their tenure, which lasted just short of two years.
The matchday programme had been published and was being sold at the ground including Dyche’s manager’s column, in which he wrote about looking to start “building some positive momentum after a couple of disappointing results”.
He will not be given that opportunity.
Former Everton manager David Moyes has been heavily linked with the vacancy, and though BBC Sport have been unable to verify the reports, he appears to be the best fit.
The 61-year-old spent 11 seasons at Goodison Park between 2002 and 2013, is more than familiar with the surroundings and has been out of work since leaving West Ham in the summer. He also matches the club’s idea of bringing in someone with Premier League experience.
“The best one who is available is David Moyes,” former Everton captain Alan Stubbs told BBC Radio 5 Live. “I can see Moyes being employed by Everton in the next day or two.”