Iain Campbell said the “horrendous” decision to send off Gavin Malin and award Airdrieonians a penalty killed the game on Saturday.
But Campbell admitted the Loons weren’t good enough to merit a victory as the Diamonds ran out deserved 3-1 winners at New Broomfield Park.
Goals from Marc Fitzpatrick, Bryan Prunty and Scott Fraser sent Forfar Athletic down to third in the League One table, but Yano said the defeat doesn’t mean the Station Park club are out of title contention by any means.
He said: “It’s a hard one to take. The boys are all saying it’s a horrendous decision. I was close to it and I couldn’t believe it, even Prunty’s saying it’s never a pen.
“We were poor, especially first half, but the sending off kills the game. There was most of the game to play, we’d have come back strong especially in the second half.
“We’d have regrouped and with 11 men we’d have been confident of getting back in the game.
“The boys huffed and puffed second half but the game was beat. With 10 men it’s hard, especially with a big pitch.
“We know how fast they are, they’re always in our face.
“It’s always the same when we come here, it’s a bad ground for us.
“They’re a decent side and all credit to them, they won the game and they deserved it.”
Campbell vowed that the side will bounce back from this blow in next week’s big game at home to Dunfermline Athletic, whose 3-2 win over Stenhousemuir will see them arrive at Station Park in fine form.
Iain continued: “We will bounce back, we’ll have a good week at training and it’s a sore one to take but we’ll regroup.”
Forfar are now four points behind league leaders Stranraer but the left back believes that means nothing to the side’s title aspirations, given how much football is left to be played and how tight the top six is.
He said: “We’re still up there at the top. This doesn’t kill the title hopes at all, there are four or five teams up here and now you’d say Airdrie are back in it.
“It’s a blip really, it was a poor night for us all over, mistakes everywhere including from myself.”
Manager Dick Campbell confirmed after the game that Yano will be staying at Station Park for the near future after the boss agreed a 93-day loan deal with Iain’s parent club Cowdenbeath.
That deal will see him miss the last couple of games of the season though, as well as the promotion play-offs - should Forfar make them.
Iain is eager to do his best for the club in that time and while he admits it’s a huge task, he says he’d love to help the Loons into the Championship.
He added: “It’s a 93-day loan so I’ll miss the last couple of games and the play-offs if we’re in them.
“It’ll be tough to get up a division, it’d be massive, it’s a great club but it will be tough.”