Wigan then cruised to a 4-0 win at the JJB Stadium, where a number of City fans left early after watching a sorry performance from the Blues.
“I was at the game and could fully understand the reaction of our supporters who were there," Wardle told mcfc.co.uk. "I can also appreciate why some of them left early and I shared their anger.
“I want the players to take a long look at themselves this week. They must understand that the performance was unacceptable.
“As Chairman of the football club, I sat with the Board of Directors and man for man we were totally embarrassed by what happened on the pitch. This football club is not used to this type of performance and will not accept it. We are determined to put this right.”
Wardle added that he would welcome new investors in the club and was willing to give manager Stuart Pearce more money to spend in the next transfer window.
“As a major shareholder of this football club, I would be the last person to stand in the way of anyone who wished to come in with investment to move the club forward," he added.
“We will support the manager in the January transfer window. We have already invested a net £8.5m in players this year and we will continue to look for opportunities to improve the squad.
“Our supporters have always been tremendously loyal and I thank them for that. We must now all pull together and get behind the team in the coming weeks and months.”