Karl Robinson admitted his side's performance 'wasn't good enough' as they fell to their first defeat of 2013 at the hands of Yeovil Town.
Two goals, either side of an Antony Kay header, from in-form striker Patrick Madden were enough to see the Glovers leapfrog the Dons, who slipped to 10th in League 1.
The two goal scorers were also involved in another one of game's major talking-points, when Kay saw red following a collision with the Yeovil striker, much to the disbelief of the Dons' coaching staff who were directly on top of the incident.
And Robinson, whose side couldn't take advantage of numerous good chances as they searched for an equaliser, was left feeling aggrieved at having to walk away from Huish Park with nothing.
Speaking after the game, he said: "I've got to be honest, our performance wasn't great and we weren't at our best. I'd just like to thank the fans for coming along and turning out after the weekend.
"We didn't seem at it for the first 20 minutes. We looked lethargic, lazy and sloppy and that's not what we're like. We're very organised in what we do so we've got to make sure we do the right things in the future.
"With regards to the sending off, their guy has turned around eight yards away from Antony Kay, ran back at him and they have collided. Antony hasn't lashed out or anything like that, and he's gone down holding his face.
"Shaun Williams almost had his leg broken in the middle of park but jumped back up and carried on and the player wasn't booked for it. Izale McLeod has also been punched twice and their player got nothing again.
"It's happened too many times this year and I can't remember us ever winning because of a referring decision. We don't feign injuries, we don't dive because we try to conduct ourselves in a professional manner.
"You've got to give credit to Yeovil, though, we've got to show them respect. The pitch here is a shambles, though, and although both teams have to deal with that, it's going to have an affect physically on our players after what they went through on Saturday, but we've just got to make sure we recover properly for this weekend."
There were, however, some positives to take from the game, one of which being an assured performance from loanee Chris Lines, who made his League debut for the Dons after replacing an injured Ryan Lowe in the first half.
Robinson added: "Ryan had a finger in his right eye and so couldn't see out of it, and still couldn't properly even after the game. I thought Chris Lines, though, did really well considering he hasn't played for a long time. He passed the ball very well and his energy levels were really good and he's going to be a good player for us."