Mantom was given his marching orders late on for a high challenge on Joe Garner and Smith was left to rue what might have been for his side.
"We gave them a goal and reacted really well and got a goal back. Then a soft a free-kick led to their second goal which we felt was offside as well," he said.
"The pitch looked really bobbly and the lads complained about it at the start of the game.
"The opening goal was just a miscommunication and he (Downing) has passed it back thinking he (O'Donnell) was there and he wasn't. It was a poor mistake. But the reaction was fantastic and we were well in the game then.
"Sam's was a good tackle and he got the ball first. It was a strange decision. We're very disappointed, we know what type of lad Sam is and he's not one you would expect to get a red card. We will appeal it.
"It's a tough enough place to come anyway but there were certainly some strange decisions out there."
- Sports & Recreation
- Paul Downing
- Sam Mantom
- Bailey Wright