Leon was holding back nothing after the game when he spoke to the official site and said that the whole dressing room was disappointed with the manner of the defeat.
A goal in each half meant the Swans were beaten for the first time since the opening day of the season and Britton said "Obviously everyone in the dressing room is disappointed,'' said Britton. "We didn't play well at all and we can't have too many complaints about the result.
"If you look back at the Charlton game; although we lost, we came out saying we played well and deserved to lose. We couldn't say that today.
"It's hard to put your finger on what went wrong today, but we just weren't at the races. We never got our passing game together and we struggled from start to finish.
"It's a chance to get that performance out of our system. It's going to be a tough game; they've been on a bad run, up until today (beat Sheffield United 2-1). They've got a good manager and I'm sure they'll come good.
"Obviously we are down, you are bound to be after a defeat like that, but you can't get too down. We've got to pick ourselves up and bounce back with a performance good enough to earn us victory over Derby on Tuesday."
