I wonder if he'll try to renegotiate the deal at a lower price. Given the entire tech sector has fallen precipitously since the first announcement, it wouldn't surprise me if Twitter's board accepts a haircut and does the deal anyway.
Knowing Musks shenaningans, it's likely he wanted to sell his Twitter stock but wanted to pump it first with a semi-formal offer. Same he did with Crypto/Tesla.
Not surprising that Twitter board would call the bluff. Even if Musk tries to renegotiate to save face, the Twitter board will look better to shareholders by saying no to even lower offers.
Musk loves attention, but dumping his Tesla holdings to keep getting it may be too much for him.