Aston Villa now have to try and bounce back from the 7-1 thrashing they received at the hands of Chelsea by completely turning around that result in the FA Cup semi-final.
Martin O'Neill's men take on the Blues on April 10 at Wembley Stadium and the Irishman said it would be tough to get his players up for a return stoush after a loss of such magnitude.
"We have the same opposition in two weeks and, if we play like that, there's no point in us turning up," O'Neill said.
"I haven't seen this sort of performance from them before. From all of them, including myself, it was -unacceptable. I wouldn't accept it of myself and they shouldn't either.
"I'll have a little look at the game again, if I dare to do that.
"But we succumbed, it's as simple as that, and it's not like us. We stopped competing and stopped doing everything you're supposed to do in the professional game - all in half an hour.
"I don't want to take anything away from Chelsea but we would have been beaten by a fourth ¬division side on that last half-hour's performance."
And O'Neill was quite happy to take all of the blame for the loss and plans to put things right before the semi-final.
"The buck stops with me. It's my responsibility - as simple as that," he added.
"We have shown a lot more desire and a lot more character than we did at Chelsea and that is totally my responsibility to put right.
"I will have to address it, obviously. I will draw on a couple of experiences. I've been beaten before, I've been mauled before, although perhaps not in the same fashion as that. This will be a tough test."