Grandinetti and Councilman Charles Walker, another primary candidate, voted against tabling the development agreement and then voted to take the resolution off the table for action at a later council meeting.
Grandinetti suspects Fruscione is trying to scuttle the Hamister deal, though she said she is not sure what is motivating him.
The attack on the developer reinforces a negative image that the city has been trying to shake for years, she added.
"There are many of us that have worked long and hard to change the image of this city," Grandinetti said. "It's obstructionism, plain and simple."
Fruscione said he is not out to scuttle the deal, but rather to make sure the city and its residents get the best deal possible. He also vowed to investigate the source of the mailer in question, adding that he has some "hunches" who may have been involved but can't say for sure at this point.
"I'd like to know myself," Fruscione said, referring to the mailer's origin. "It definitely had nothing to do with me at all."