IAN Holloway took full responsibility for Millwall's 1-0 defeat at Oakwell.
The Lions blew the chance to put daylight between themselves and the Tykes in the league table and are now just one point above the relegation zone.
Jim O'Brien scored the only goal of the game for the hosts, who gave their survival hopes a major boost with a precious victory.
Over 500 Millwall fans travelled to Yorkshire on Saturday and they made their displeasure clear at the final whistle after watching a limp performance.
And Holloway said: "I don't blame the fans [for their reaction].
"How upset do they think I am? I will take full responsibility for the result, you won't catch me blaming my players.
"We've got to stick together and keep going. We finished one point above relegation on the last day of the season last year and we've made ten or 11 changes since then.
"The rot hasn't stopped. It would have looked like it had if we had won today, which we easily could have with the chances we created.
"It is a very disappointing result for all of us because it throws us right down where nobody wants to be.
"Sometimes it might be your biggest learning curve and then you fight, get some resolve and then you pull out of it.
"We've been looking over our shoulders for long enough now, so maybe we can look up and catch some of the teams above us because there will be a few now.
"That wasn't the last game of the season. No-one has died, although it might feel like it."
Asked what he thought was missing from his side's display, Holloway added: "I'm not going to sit here and talk a load of bullshit about what we might need to do.
"We have got to win games and normally that is very simple by stopping them scoring, and scoring yourselves. Did we drop our shoulders after the goal? No.
"Did we create enough chances? Yes. Could we cross a bit better? Possibly. But you won't catch me blaming anybody because there's only one person to blame and that's me.
"It is my fault – all of it. I will stand up for my team providing I think they're giving me what I want. I don't take my responsibilities lightly.
"It wasn't the manner of the defeat that upset me. How many more chances could we create in the first half?
"You need something to go for you, but we're going 1-0 down all the time.
"We could have had a break away, but we lost the ball, it bobbled away from us, they've had two passes, stuck it long and suddenly it's in.
"That had not happened this week in training and we knew where the ball was going, but I won't be blaming the players.
"Up until half time I thought I had got a decent response, but the longer the game went on, the more they held onto things and we didn't get what I felt we deserved – a point."