'Dance Moms' news: Abby Lee Miller sabotages own dance group; sentencing delayed again

In the latest episode of "Dance Moms" season 6, head choreographer Abby Lee Miller sunk to a new low, sabotaging her own dance troupe's chances of winning at a competition.

In "Float Like a Butterfly, Sting Like Ab-bee," the dance moms were unimpressed with Abby Lee's choreography for the Muhammad Ali tribute competition. Instead of going with Abby Lee's routine, they asked the guest choreographer to lead the junior team in performing their dance for a sneaker commercial.

At the event, the competition director informed the moms that the junior team was disqualified as per Abby Lee's instructions. When confronted by the irate moms, Abby Lee denied that she tried to sabotage her own team, but everything was on tape and she was caught in the lie.

Though the team was able to perform at the competition, Jill Vertes, Kendall's mom, later said: "I think our time here is done. I have so much respect for these girls. They're done. They made Abby a household name. And she's treating them like dirt."

As though the possibility of a mass exit wasn't bad enough, Abby Lee's upcoming sentencing and possible prison sentence still looms large.

Fortunately for Abby Lee, the sentencing date for her fraud case has once again been pushed back. According to Deadline, her sentencing in December will instead be held in January 2017.

In June, Abby Lee pleaded guilty to 20 counts of fraud and a charge for violating currency reporting laws. In September, she and her lawyers were granted an extension on the original sentencing date.

"Sentencing in the above captioned cases is tentatively set for Friday, Dec. 2, 2016," U.S. Attorney David Hickton said in documents filed last week in federal court. "Due to a scheduling conflict, government counsel is unavailable on that date ...the Government respectfully requests that the sentencing date be continued until Friday, Jan. 20, 2017, at a time convenient for the court."

Abby Lee was charged by the federal government in October 2015 for allegedly hiding more than $755,000 in earnings from "Dance Moms." She was charged with concealment of bankruptcy assets, false bankruptcy declarations and bankruptcy fraud. She is now facing up to $5 million in fines and up to five years in prison.

"Dance Moms" season 6 airs Tuesdays at 9 p.m. EDT on Lifetime.