Bournemouth boss Lee Bradbury was fuming with referee Ian Williamson for failing to send off Hartlepool's Andy Monkhouse.
Monkhouse was only booked for a reckless challenge on Warren Cummings seconds before Evan Horwood's 87th-minute winner for the visitors.
"Warren has got three holes in his shin pad so that shows how bad the challenge was," said Bradbury, who continues to find himself under pressure after taking only nine points from the opening 10 games of the season.
"I had a great view of it from the dugout and from where I am standing it was a red card. Sometimes in football you are on the right end of those decisions but when they go against you it is very frustrating. I have been in to speak to the referee but he does not see he made any mistake.
"It is even more frustrating because I think we were the better side. We had more possession than them and created more chances and did not deserve to come away with nothing.
"I have no problems with the way the players performed and on another day we would have won."