The 32-year-old was dismissed after head-butting Hayes and Yeading defender Esmond James in a 2-0 defeat in November and underwent club action as well as a three-match ban.
Danie Rossouw had come in for Bakkies Botha, who was banned for nine weeks for head-butting Cowan in the opening match, but Rossouw was sent to the sin bin as early as the fourth minute.