Swindon boss Danny Wilson blasted his side's "criminal" defending after they lost 2-1 at MK Dons.
Sam Baldock scored two headers in the space of a minute to cancel out Scott Cuthbert's first-half opener, before David Prutton saw red in the 88th minute for two bookings.
"The smallest man on the pitch scores two headers, it's incredible," said Wilson.
He continued: "They had better chances than we had - Dave Lucas was outstanding at times. We started to feel we were getting in the game second half but to concede the goals we did is just criminal - it's inexcusable.
"It has cost us the game again and I'm fed up with saying it. Two set plays have undone us and they were two very poor goals.
"It has got to be a mental thing. Taking responsibility at key areas at key times in games is what we are not doing. If we defended better we could have come away with a hard-fought win. In the latter stages of the game there were too many people hiding."
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