A SPAT broke out between councillors and the town clerk after members questioned the need to review their decision to oppose plans for the £110 million development at Coyte Farm.
During Monday's meeting, a series of heated exchanges was sparked after town councillor and Cornwall councillor Sandra Heyward asked: "Why are we reviewing a decision we made 12 months ago?"
"It's as though they didn't like our answer last time, so now they are going to have another go to see if they get a better answer this time."
Town clerk David Pooley said he had been asked to bring the item before the council during a series of informal meetings with councillors over the summer.
"I can only do what you ask me to do as a group of members, and I have done that," he said.
Mr Pooley said the publication of various retail impact assessments, amendments to the plans and the election had given rise to requests from councillors to review the council's previous recommendations regarding the development.
The discussions only turned to the application itself after Jackie Bull, town councillor and Cornwall councillor, spoke out in support of reviewing the decision.
She said: "Why on earth are we talking about whether we are or are not talking about something which is as important as this?"