Following the fiery incident Mr Cowburn indicated that he would be reporting the incident to the FA, however Paul Hart is adamant that he will fight any charges levelled against him by the FA.
"If I am reported I will take this right to the end, wherever it has to go. I did have an exchange of words with the referee afterwards but he had a fair bit two say as well.
"I didn't think Lester's first booking was justified, let alone the second and the majority of people inside the ground would agree."
The red card has detracted from what was a fine win for the third-placed club over high-flying Reading, goals from David Johnson and Marlon Harewood gave the City Ground side three festive points to boost their Play-Off aspirations.
Victory for Forest came after two defeats on the road at Bradford and Burnley in recent matches.
The Royals, who have been on a phenomenal run of late, barely threatened Darren Ward's goal and could have lost by more than two goals to nil.
Hart was as quick to commend his team's performance as he was to belittle the referee's display.
He added: "We played some very good football at times and could easily have had more goals to show for our efforts. Apart from anything else we have hit the post twice."