Pep Guardiola was involved in a furious row with Wigan boss Paul Cook as Manchester City's quadruple bid was sensationally derailed by their FA Cup bogey team.
Will Grigg scored a stunning late breakaway goal as Wigan repeated their shock 2013 final victory over City in a fiery fifth-round tie at the DW Stadium, winning 1-0.
The main talking point came on the stroke of half-time as City's Fabian Delph was controversially sent off and an irate Guardiola became embroiled in a touchline argument with Cook.
The pair continued their row in the tunnel as the teams left the field at half-time and they had to be separated by colleagues.