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Celebrity agent Max Markson, who was moved to Team Ignite with model Didier Cohen for a task at Sydney Aquarium, was labelled "uncharitable" by the members of his rival team after stealing a $5,000 (£3,200) cheque from them.
Team Unity - now consisting of Pauline Hanson, Jesinta Campbell, Wendell Sailor, Jason Coleman and Shane Crawford - were handed the cheque by Woman's Day magazine after choreographer Coleman agreed to do a special dance for them.
Markson, however, claimed that he had already been pledged the money by the publication's editor and insisted that the donation belonged to his team.
In the boardroom, Coleman told Mark Bouris: "Any attempt to reason with Max was futile. I walked away from the situation, no cheque in hand."
Cohen said that the incident was inappropriate because it was a "family event" and added that the money would be going to a breast cancer charity "either way" so it didn't matter.
Markson blamed his aggressive behaviour on his "passion", saying that he just wanted to win. Bouris described the matter as "unsavoury" and added: "There's some grey area between being aggressive and sealing the deal," and Markson then apologised to everyone.
Team Ignite won the challenge after raising $32,876 (£21,190), while Team Unity pocketed only $17,874 (£11,521). Its members will therefore face the boardroom and elimination in Thursday night's episode. Deni Hines was eliminated earlier this week, while Polly Porter and Warwick Capper were fired last week.
> 'Celebrity Apprentice's Deni Hines 'thought she'd hate Pauline Hanson'
> Aussie 'Celebrity Apprentice's Didier Cohen breaks down during task
