While nothing seems like it sticks any longer, at present, what some are estimating as 8 million dollars has been grabbed back from employers by retroactively ending the Employee Retention Credit as of Oct 21.
IRS has not yet posted any advice how this will be handled as far as timely deposits, and paying back any advanced amount.
There is some push for undoing this action, but it seems like a good choice to consider Q4 ERC dead, and make deposits asap for any amount retained or advanced from Q4 ERC.