Leaders Haroldeans coasted home thanks to a hat-trick from Jordan Brookes.
But Reich director of football Gastwirth pulled no punches in his assessment of his struggling side's conduct this term.
Gastwirth said: “The game was lost in the car park. Haroldeans arrived as a team, played as a team and won as a team.
“Our preparations were poor and then found ourselves 4-0 down within the first 10 minutes.
“This will not be accepted by the club and we will look at possible contract terminations for repeat offenders.
“Once our players realised that they were playing a game of football we actually competed for the remaining 80 minutesand the second half ended 2-2 thanks to goals from Avi Kasmir and Dan Feddy. But the damage was already done.”
Meanwhile, Haroldeans continue to lead the way with Max Barnett, Zac Goldsmith and Adam Cross also on target.
Boss Mike Bloomberg said: "It was another professional performance.
"We must ensure we remain focused and maintain our high standards for the remainder of the season."
Sedgley Park Celtic remain hot on their heels following a 6-2 win over Maccabi Manchester Blue.
Nathan Pitt and Jake Kelly were among the scorers to leave Sedgley two points behind the Merseysiders, having played a game more.
But title rivals South Manchester Sports 1st lost ground after slipping up 4-3 at Maccabi Manchester Yellow.
Ben Gould (2), Louie Libbert and Kai Gibson did the damage to derail South's title push.
Photo: Lawrence Purcell