John Coleman said there could be no other decision that to overturn the sending off of captain Sean Conneely on Tuesday night.
The skipper was sent off in the 16th minute of the 2-1 defeat to Ipswich Town, with the Reds leading 1-0 at the time.
The midfielder saw red for denying an obvious goalscoring opportunity but the Football Association rules state that, on denying a goalscoring opportunity, a player should be cautioned if he attempted to play the ball, not sent off.
It means Conneely's one-game ban is overturned and he is available for tomorrow's home clash with Swindon Town.
"I am more pleased for Seamus as he didn't deserve to get sent off," said Coleman. "We won't get back the opportunity in that game again but we can't look back and we can only look forward now.
"I was sure we would win the appeal as it's borderline whether Seamus actually touched the ball.
"It means he is available for Swindon which is good news and it won't impact on tomorrow's game as well."