Stevenage came from behind to beat 10-man play-off rivals MK Dons.
Jay O'Shea fired home after Stevenage keeper Chris Day spilled Adam Smith's cross, before Michael Bostwick's long-range strike levelled matters.
Mathias Doumbe got his second yellow card for a lunge on Chris Beardsley, allowing Scott Laird to nod home the resultant free-kick.
Stevenage's Darius Charles and Dons' Tom Flanagan both headed in, and Dons' Gary MacKenzie netted an own goal.
The game was watched by former Colorado Rapids boss Gary Smith, who is expected to be named as Stevenage's new manager on Wednesday.
VIEWS FROM THE DRESSING ROOM
Stevenage's Mark Roberts told BBC Three Counties Radio:
"The lads never cease to surprise me. It was a terrific response to going 1-0 down and to score four goals again was different class.
"We came out all guns blazing and then got done on the counter attack and it took us a while to get going. But we know what our strengths are and we're very good at (playing to) them.
"We've made a few sloppy errors. We'll tighten up on that, there is room for improvement in this squad."
MK Dons manager Karl Robinson told BBC Three Counties Radio:
"Sorry to the fans who travelled. It's not good enough, it was five minutes of madness.
"People need to wise up a bit to how Stevenage play, but you have to give them tremendous credit. They won the game and I'm not bitter at all.
"In the end they deserved the victory and we need to learn lessons from it. It was a bad night in the office. The most important thing is that the fans hopefully accept my apology."