Tesla CEO Elon Musk lost his fight to delay Twitter’s lawsuit against him as a Delaware judge on Tuesday set an October trial, citing the “cloud of uncertainty” over the social media company after the billionaire backed out of a deal to buy it.

“Delay threatens irreparable harm,” said Chancellor Kathaleen St Jude McCormick, the head judge of Delaware’s Court of Chancery, which handles many high-profile business disputes. “The longer the delay, the greater the risk.”

Twitter had asked for an expedited trial in September, while Musk’s team called for waiting until early next year because of the complexity of the case. McCormick said Musk’s team underestimated the Delaware court’s ability to “quickly process complex litigation.”

Twitter is trying to force the billionaire to make good on his April promise to buy the social media giant for $44 billion — and the company wants it to happen quickly because it says the ongoing dispute is harming its business.

“It’s a very favourable ruling for Twitter in terms of moving things along,” said Carl Tobias, a law professor at the University of Richmond. “She seemed very concerned about the argument that delay would seriously harm the company, and I think that’s true.”

Musk, the world’s richest man, pledged to pay $54.20 a share for Twitter, but informed the company in July that he wants to back out of the agreement.

“It’s attempted sabotage. He’s doing his best to run Twitter down,” said attorney William Savitt, representing Twitter before McCormick on Tuesday. The hearing was held virtually after McCormick said she tested positive for COVID-19.

Musk has claimed the company has failed to provide adequate information about the number of fake, or “spam bot,” Twitter accounts, and that it has breached its obligations under the deal by firing top managers and laying off a significant number of employees. Musk’s team expects more information about the bot numbers to be revealed in the trial court discovery process, when both sides must hand over evidence.