IAN Holloway fumed at Millwall's worst display of the season so far after a 2-1 defeat to Huddersfield Town on Saturday.
The Lions boss claimed his side were "unrecognisable" from recent matches and promised to make changes to his starting XI for Birmingham's visit to The Den in midweek.
Two goals from Nahki Wells – the second of which came from the penalty spot after Nicky Bailey's trip on Harry Bunn – condemned the visitors to a deserved loss.
Holloway refused to attribute the result to the referee's match-changing decision and chose instead to criticise Millwall's wayward passing.
"It was a penalty because the referee gave it," he said.
"I was disappointed with our overall game. That's as poor as I've seen us – we didn't look like the same players.
"We've got to get back on the bus and win on Tuesday because the more I say about that game the more annoyed I'm going to get because that didn't look like my team.
"I switched Ed Upson and Scott McDonald, I moved Abdou and I moved Williams. I think I moved one player too many around and we didn't have any ebb and flow.
"We lacked a little bit of legs here because one or two people have been out for a while.
"That was as poor as we've been – it's very, very disappointing.
"I had a passing team out there who couldn't pass it. I want to forget that game because it was awful.
"We needed three or four of our players to get a grip of the game and do something that gets everybody going but not one of my players had a half-decent game.
"We had a good start to the season but now we've ruined it."
Millwall were right in the game at the halfway stage after Ed Upson's first goal for the club had cancelled out Wells' opener.
But Holloway said the Lions fell away in the second half.
"We've been passing it crisply and neatly and there were opportunities to open them up," he said. "We knew where the space would be and didn't exploit it.
"Chris Powell threw us a bit of a curveball by playing 3-5-2. We hadn't prepared to play against them like that. We thought they would be 4-3-3.
"But even with two up front, I felt we were comfortable.
"It's really difficult for me to talk about this because that didn't look like my team.
"The players have been playing so well for the last however many months but they couldn't pass it and they made the wrong decisions.
"The crowd was very flat as well – it really was a quiet atmosphere and it's not usually like that here. I don't think anybody mustered anything until they scored.
"It was a long ball forward, which we should be able to deal with, it's dropped to Wells and he's smashed it in – a fantastic strike out of nothing.
"We've then gone and scored the best goal we've scored all season – it was a great move and a great finish – and I was then waiting for that to ignite us but it didn't.
"I couldn't wait to get in at half time to say what I said but we got worse after that.
"The whole game was pretty dire – as poor a game as I've seen. We didn't move the ball quickly enough or play our patterns. Williams and Bailey were trying to do the same job.
"We're crying out for someone who can run with the ball like Lee Martin does – I haven't really got anybody else like that yet."
Asked whether he would make changes to his line up on Tuesday night, Holloway added:
"Do you think anybody is safe in there? Our level of performance dropped way below what we've been producing recently."