"We are absolutely gutted," added Holloway. "We are devastated to lose. I will wake up on Wednesday and feel like I have been kicked in a very delicate place.
"I will have a horrible ache for a while and then it will be gone."
"We needed the penalty. That would have really thrown a grenade into it."
United boss Sir Alex Ferguson admitted his side had been unable to cope with the set-piece delivery of Blackpool midfielder Charlie Adam, whose corners led to goals for former Red Devils defender Cathcart and striker Campbell.
The visitors were still labouring 20 minutes from time but the introduction of Hernandez for Wayne Rooney on 66 minutes transformed the contest.
Hernandez levelled two minutes after Berbatov had hauled United back into the game and the match was heading into 10 minutes of injury time when the Bulgarian struck again in the 88th minute - his 20th goal of the season and his fifth in two games.
Terrific fightback pleases Phelan
"We were deep in the mire in the first half," admitted Ferguson.
"We just couldn't handle Charlie Adam's free-kicks and corners.
"We were all over the place. His corner kicks are worth £10m in themselves.
"The boy is an incredible striker of the ball. But the rhythm of our game was poor in the first half. Our penetration wasn't right.
"I just wonder if they were over confident before the game.
"They got a rude awakening but this is a result industry and we got a result which may have a big impact on the league at the end of the season."
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