Dean McDermott’s son Jack defends dad and Tori Spelling says mom adds ‘tension’ to family

Mary Jo Eustace, Dean McDermott and Jack McDermott

Charley Gallay/Getty; Dean McDermott/Instagram

Dean McDermott’s son Jack calls his mum Mary Jo Eustace after claiming she ‘spread about my dad, my stepmom and my siblings’ on the former couple’s podcast Ex and Uh-Ohs.

On Monday, the 24-year-old shared a lengthy post on Instagram in which he noted he was “no longer able to keep quiet” after his mother created “pressure on our family dynamic”. McDermott was married to Eustance until 2006 and is now married to Tori Spelling, with whom he shares five other children.

“Since my parents’ divorce in 2006, I have rarely spoken as I preferred to stay out of it. Unfortunately, due to my mother’s recent decision to release information about my father, my stepmother and my brothers and sisters, I can’t keep silent anymore,” Jack wrote in a series of screenshots posted to his Instagram page.

“About a week ago my dad made the decision to step away from his podcast with my mom ‘Ex’s & Uh-Ohs.’ He chose to leave due to negative comments about our family and constant attempts to slander his character. He also chose to leave because the show’s producer betrayed his trust and leaked private information,” he continued.

“For 17 years my dad atoned for the mistakes he made in the past. He’s grown so much as a person. Until a week ago, our two families where [sic] live in harmony,” Jack wrote. “With this podcast, he drove a wedge between our two families and created a wedge that I am not able to mend. Unfortunately, I’m not sure that’s possible.”

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RELATED: Tori Spelling Shares Holiday Card With Husband Dean McDermott & Their Kids: ‘We’re All In This Together’

“I ask that the information shared about ‘Ex’s & Uh-Ohs’ be taken with a grain of salt,” he said. “From my mother, I ask that you please respect me and my blended family. Please avoid creating additional pressure on our family dynamics.”

“The last few years have been nothing but peace and happiness, and I ask that we keep trying to keep it that way,” Jack concluded.

PEOPLE has reached out to Eustace for comment.

Along with the post, Jack also included photos with Dean, Spelling and his siblings from a recent vacation photoshoot featuring the whole family.

Dean and Spelling share sons Liam, 15, Finn, 10, and Beau, 5, as well as daughters Stella, 14, and Hattie, 11.

Last year, Dean was conspicuously absent from the annual spelling holiday card months after the actress hinted that she and her husband were having marriage issues. Spelling explained he couldn’t be in the photo because he was “filming his new feature film in Canada” at the time it was taken.