Pools were dumped out of the FA Cup by lowly Macclesfield Town on a controversial afternoon at Moss Rose.
The game turned dramatically on the stroke of half time as the hosts were awarded a penalty and Antony Sweeney was shown a red card for deliberate handball.
Pools had been ahead at that stage and looked a good bet to progress to Round Three but the decision by Referee Penton was to change the course of the afternoon.
Danny Wilson's men stole ahead on eight minutes with their first meaningful attack; Ali Gibb's wickedly-delivered cross from the right flashed across the goal and looped in to the net off the shin of Town defender Carl Regan.
From then on, Pools dictated play but couldn't turn their possession in to a second goal; Bullock's downward header was on target but too close to goalkeeper Asmir Begovic.
From that attack, The Silkmen broke on Pools and a snap shot by Jamie Tolley for distance was superbly clawed round the post by Dimi Konstantopoulos.
The resulting corner was swung right in on top of the Pools goalkeeper who pawed it out towards the penalty spot. It was drilled back in through a crowded area by Regan and struck Sweeney on the line - the referee blew his whistle, pointed to the spot and reached for his red card.
It was harsh on Pools but there was no sympathy shown by left-back Kevin McIntyre who's sweet strike from the penalty found the corner.
From then on, it was always likely to be an uphill task for Danny Wilson's side and they fell behind just after the interval.
A free-kick was conceded by Lee Bullock on the right and when the hoisted ball was flicked on by the awkward Matthew McNeil, John Murphy stooped at the back post to head his first Town goal since a loan move from Blackpool.
Pools huffed and puffed but could not find a route back in to the game; Jon Daly's prodded effort near the end was as close as they came.
Danny Wilson revealed afterwards that the Club would be appealing the sending-off but was furious at the decisive moment which saw Pools reduced to ten men.