Ange Postecoglou slammed Tottenham's flops as furious fans turned on the Australian and his spluttering side after Bournemouth condemned them to a shock 1-0 defeat on Thursday.
Dean Huijsen netted in the first half at the Vitality Stadium to leave Postecoglou's troubled team with just one win in their last six games in all competitions.
The 19-year-old defender's first goal in English football after his close-season move from Juventus exposed the flaws in Tottenham's error-prone defence.
Lacklustre Tottenham were fortunate not to lose by a bigger margin as Andoni Iraola's side wasted several chances to increase their lead.
Tottenham's sixth Premier League defeat this season was another setback for the under-fire Postecoglou after last weekend's disappointing 1-1 draw at home to 10-man Fulham.
"It's not good enough. We again fell into the trap of starting the game really well and then we conceded a really poor goal," Postecoglou said.
"It's disappointing – we have this propensity to shoot ourselves in the foot when we should be controlling games," he went on to say. "It's something we've done consistently, and we always pay the price for it."
Having wasted a golden opportunity to qualify for the Champions League last season, Postecoglou is beginning to hear criticism of his overly-attacking tactics and this dismal display will add to the Australian's doubters.
Tottenham are languishing in 10th place, six points adrift of the top four heading into Sunday's London derby against second-placed Chelsea.
"The fans have every right to be disappointed. I got some pretty direct feedback with the way that we are going at the moment and that is rightly so," Postecoglou said after he was jeered by Tottenham fans after the final whistle.
"I didn't like what was being said, because I'm a human being but you're going to cop it," he added. "All I can say is I'm determined to get it right, and will keep fighting until we do."
Ninth-placed Bournemouth have now beaten Arsenal, Manchester City and Tottenham at home this season.
Meanwhile, Alex Iwobi scored twice as Fulham took advantage of a howler from Brighton keeper Bart Verbruggen to beat the Seagulls 3-1 at Craven Cottage.
Marco Silva's men were gifted the lead in the fourth minute when Verbruggen, under minimal pressure, tried to pass to Carlos Baleba on the edge of the area, with Iwobi intercepting and slotting into the empty net.
Brighton levelled in the 56th minute when Baleba fired past Bernd Leno from 25 yards.
But Fulham went ahead again with 11 minutes remaining when Andreas Pereira's corner skimmed off Calvin Bassey and went in off Brighton's Matt O'Riley for an own goal.
Iwobi's curler sealed the points with three minutes left as Fulham moved up to sixth place after their third win in their last five league games. (AFP)