Hell hath no fury like Sharon Osbourne scorned!

The longtime judge says she’s walking away from AMERICA’S GOT TALENT after a nasty spat with NBC that started when a new reality show on the network parted ways with her son Jack.

“They can’t make me do something I don’t want to do,” Sharon says.  “All they can do is they can stop me from being a judge on another network for five years.”

Per The New York Post:

“It’s time to move on,” she said.

While Osbourne remains under contract, “They can’t make me do something I don’t want to do,” she insisted. “All they can do is stop me from being a judge on another network for five years.”

Osbourne said ‘AGT’ producer Simon Cowell had tried to make peace between the network and his longtime friend but that she’s not budging.

Things first turned ugly in June when Jack appeared on his mother’s daytime series “The Talk,” claiming he was fired from the military-style competition because of his newly disclosed condition.

But at a “Stars and Stripes” press conference in LA last month, producer David Hurwitz heaped fuel on the fire, insisting that Jack was never hired to begin with.

“He was somebody we were in talks with,” Hurwitz said.

Both Osbournes admit his 50-page contract was never formally signed.

But they contend that all parties were moving forward on a good-faith, verbal commitment, which is commonplace in the industry.

“I was working without a signed contract right up until the live shows started on ‘America’s Got Talent,’” Osbourne noted. “Everything is done at the last minute. We took six months to negotiate back and forth.”

Jack was first contacted by NBC in April.

After coming to what he considered a binding agreement to participate, he received an e-mail May 18 from Chuck LaBella, the network’s vice president of Talent Relations.

“We are looking forward to working with you,” it said. “I am happy you are going to be in the NBC family.”

A month later, Jack went public with his condition.

Sharon Osbourne provided The Post with an e-mail she said she got from NBC soon after, just two days before Jack was due to report to work in June.

“Regretfully, we cannot move forward with Jack’s participation,” it said.

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