In the latest bomb in the Twitter takeover drama, Elon Musk tweeted this morning that his $44 billion bid was “temporarily on hold” until he could verify the company’s estimate that spam and fake accounts on its platform made up less than 5 percent of total users (that number is not new). About two hours later, Musk tweeted that he was still “committed” to the acquisition. Twitter shares had already fallen by 20 percent in premarket trading, while Tesla shares had jumped by 6 percent.

The tweets fed into swirling speculation that Musk may back out of the deal, as shares of Tesla, Musk’s main source of personal income, have tumbled. Musk had a covert meeting at Twitter’s San Francisco headquarters last Friday to discuss business and deal logistics, DealBook has confirmed, implying he was, at least then, focused on going through with it. (A spokesperson told DealBook that “as part of the transaction planning process, Elon Musk visited Twitter’s office for a meeting.”)

Can he even back out of the deal? He has already signed a contract. Beyond the $1 billion breakup fee, Twitter could take Musk to court to force him to pay for the deal if his debt financing is intact, per the deal contract. (This is what happened in 2001 when Tyson Foods tried to back out of an acquisition.)

Musk might be trying to push for a lower price by laying the grounds for a finding of material adverse change, similar to what LVMH did in its acquisition of Tiffany, citing financial damage caused by the pandemic. LVMH ultimately got a lower price for the deal.

But the “adverse change” threshold is high. And given the speed and limited diligence with which Musk pursued the Twitter deal, he is unlikely to find a sympathetic judge. Musk has already told investors he thinks Twitter can quintuple its revenue, which would make Twitter a steal at $44 billion.

“He’s already signed on the dotted line that says he bought a house,” said Brian Quinn, an associate professor at Boston College Law School focusing on corporate mergers. “If after you buy a house, you say, ‘I want to get a lower price,’ the seller will say no.”

The deal looks different than it did a week ago:

• We know more about Twitter’s challenges. Its C.E.O., Parag Agrawal, said yesterday that two top executives were leaving. (They tweeted that they had been fired.) He also said he had frozen most new hiring and was slashing spending. He said the moves stemmed partly from Twitter not hitting goals in audience and revenue growth. Twitter shares closed yesterday at $45.22 — well below the $54.20 Musk has offered. More broadly, tech stocks are facing a bloodbath.

• Did Musk’s tweet violate disclosure laws? It moved shares of Tesla and Twitter, indicating it should have been something all shareholders found out about in a securities filing. Should that be added to the long list of regulatory issues Musk has run into with this bid?