Substitute Steve Davies capitalised on goalkeper Collin’s huge misjudgement to tap in a leveller with just five minutes to go.
Jordan Bowery had come off the bench himself to put Rotherham ahead on 78 minutes but Collin’s error cost them the three points in the basement battle.
Rotherham exited the relegation places but Evans claimed that they should have won the game against the league’s bottom team.
Of the calamitous goal, Evans was critical of his captain Craig Morgan as well as the keeper.
He said: “It’s just a hoof, Craig slips and then Adam comes out. A 10-year-old should deal with it. He’s a lovely kid but I don’t want lovely kids, I want winners. He should hit it away, it’s a huge error.
“The ball shouldn’t get to him because our captain should deal with it. He slipped last week which led to a Birmingham goal and he slipped today so we’ve told him to sort his footwear out.
“Blackpool were never going to score. I don’t think they had a chance from open play in the first half.
“In the first 25 minutes we blew them away. I think it’s the most exciting I’ve seen us play and we just didn’t get the goal. If the goal would have come we could have laid them to bed by half time - I think we were that good.
“By a country distance we deserved to win but if you make cardinal sins you get punished.”