Would anything let him change the deal at this point? Even if Twitter was hiding their bot problem Elon's initial offer waived his ability to do due diligence on this, no?
Currently the target is Nov 8, but a lot could happen before then.
The entire waiving of due diligence thing is also such a weird talking point. There was no contingency on due diligence, but part of the deal did include access to the information he would need to do it and any incorrect information in public filings should have been enough to get out of the deal.