Nottingham Forest boss Joe Kinnear has accused Sheffield United manager Neil Warnock of encouraging the referee to book his players.
Kinnear branded Warnock "a complete prat" after a stormy draw at Bramall Lane which saw Blades' Alan Quinn and Forest's Andrew Impey sent off.
The Forest boss claimed Warnock tried to unduly influence referee Graham Salisbury after Quinn's dismissal.
Kinnear said: "His behaviour was laughable at times."
In an ill-tempered contest, Quinn became the third Blades' player to be sent off in four games for a retaliatory kick at Forest defender Michael Dawson just before half-time.
Impey, who had earlier been booked for a late challenge on Danny Cadamarteri, followed for his part in a late scuffle in the Blades' penalty area.
Referee Salisbury turned down Forest appeals for a penalty and after ruling Chris Commons had dived, an unseemly melee broke out, which saw Impey get his marching orders as the match finished on a sour note.