The Stags were left stunned after two late Carlisle goals meant the points were shared amid torrid weather conditions at the One Call Stadium.
Mansfield Town manager Graham Coughlin was left far from impressed after seeing his side squander a 2-goal lead in the dying embers of the match.
In a vital 6-pointer, Nicky Maynard’s clinical brace appeared to have gifted his side their second win in three outings to widen the gap with the relegation spots and leapfrog their opponents.
However, with nine minutes left on the clock, Elliott Watt’s intended cross sailed into the top corner with the help of a timely gust of wind to set up a nervy finale.
And in the 93rd minute, disaster struck as the home defence failed to clear their lines to allow Joshua Kayode to bundle in the equaliser from close range, sending the away supporters into delirium.
Following the 2-2 stalemate, Coughlin said: “It’s car crash defending. It should not be happening at this level – it’s not good enough. It feels like a defeat.
“You don’t give the foul away in the 94th minute, then fail to shut down the front post and let the ball bounce into your box. I am just asking us to see out the last free-kick of the game.”
The draw means the Stags remain 21st in the League Two table on 31 points, with Carlisle still one position and two points above them.
With 15 games left of the season and ties against other fellow strugglers yet to come, only time will tell just how big an impact the two dropped points will have on Mansfield’s fate in the division.