Here's an excellent article on the subject. It confirms that you can't do that; although it does say that the IRS position on enforcement is not clear. One option that was available was to put the money back (roll it over) within 60 days.
https://www.savingforcollege.com/article/timing-of-529-plan-distributions-must-match-qualified-expen...
We have seen several cases like yours. Sometimes the taxpayer made the mistake and sometimes it was the plan. Some have said they are going to claim it as a qualified distribution and hope they can get some leeway from the IRS, if "audited", as the intent was to make qualified distribution.
