The manager of the Dons could not contain his frustration after struggling Rovers had romped to a convincing 3-0 win and, with no fixture next weekend, Ardley is already planning a series of tough practice sessions.
First-half goals from David Clarkson and Tom Parkes, plus a late Matt Harrold penalty, gave the hosts a major lift against opponents who finished with 10 men after having midfielder Sammy Moore dismissed for a second yellow card eight minutes from time.
Ardley said: "I can only apologise to our fans. Credit to Bristol for doing all the things necessary to win a League Two game, but we were bullied all over the park.
"We didn't produce an ounce of the energy necessary to compete. I am angry because I told the players exactly what to expect.
"The fans will say we were poor and whatever they are thinking I am thinking 10 times worse. We were dreadful.
"The referee didn't help and I am not going to defend his performance, even though he got the sending-off right. We should have had a penalty early on, but I am not going to hide behind that because we were well beaten."