Substitute Steve Davies capitalised on goalkeeper Collin’s huge misjudgment 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 the Millers two points in the basement battle.
Rotherham exited the relegation places, but Evans claimed they should have won the game against the league’s bottom team.
Of the equalising goal, Evans was critical of his captain Craig Morgan as well as his goalkeeper.
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 (on Saturday) 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.”
Blackpool manager Lee Clark accepts his side are going to have to start picking up wins soon if they are to lift themselves off the bottom of the table.
“You think it’s gone when they score that late, but we still thought we’d get a couple of chances,” said Clark.
“We obviously got a bit of luck with the goal but I felt at the time we were probably the team on the front foot. We were keeping good possession of the ball and creating one or two opportunities.
“The goal is really poor from our point of view. We don’t touch the ball until they score so we have got to learn to get pressure on the ball somewhere before the move starts taking shape – so we’re disappointed with that but we are delighted with the character of the players.
“Since the international break I’ve been encouraged by the last two performances. We have taken a couple of points from those and want to go on from there if we can. We need to change one point into three. That’s the key.”
Rotherham United: Collin, Wootton, Morgan, Broadfoot (Arnason 42), James, Ledesma (Revell 82), Green, Smallwood, Pringle, Derbyshire, Lawrence (Bowery 69).
Unused substitutes: Frecklington, Taylor, Clarke-Harris, Thompson.
Blackpool: Lewis, Foley, Nosworthy, Clarke, Kennedy, Eagles, O’Keefe (Delfouneso 56), O’Hara, Perkins, Murphy (Miller 80), Ranger (Davies 46). Unused substitutes: Orlandi, Dunne, Parish, Waddington.
Referee: Tony Harrington (Cleveland).
Man of the match: Jordan Bowery.