Fundamentally, I don't for a second believe that a bollixing from his wife, and a WTF have you done?/you could be fired for this shit, will have changed who he is.
I think what he has done is so shocking and comes from such an ugly place that he is not for fixin'.
My extensive experience of misogynistic pricks, means that I don't believe he will change.
Most likely he's gotten a bad fright, will back off, lick his humiliated wounds and lay in the long grass waiting for an opportunity in the future, to even the score.
I have certainly seen this.
There is no way I would continue working for him.
I would make it abundantly clear on paper that such was the nature of his personal attack upon me, that I will never feel safe around him.
That I wouldn't trust him to not attempt to try an manage me out, which obviously would be grounds for constructive dismissal.
I think you need to note as much as possible on paper, and by reply get it acknowledged by them.
Have they sent their offer on paper?
Reply that whilst you appreciate the offer, you are deeply concerned for your safety and reputation around this man and will seek advice as to your future at the organisation.
He felt comfortable slandering, defaming and name calling you in front of colleagues because of what he wanted you to do in the privacy of your own home.
He is your manager, and he attempted to coercively control you.
This is a crime now.
You may think that the above is dramatic.
It is not.
A very dear friend of mine in her late 50's, working for a huge multinational was on speaker phone, being threatened by her boss if she did not take on the work load of her off sick colleague.
She started to cry as she explained that she was already covering for a mat leave colleague and simply couldn't do it as she was already working 10 hours straight a day.
She is no walkover.
Her husband was outside the door and recorded the latter part of the conversation as she was WFH.
The result has been a catastrophic shit show for her boss and she was on paid leave for 12 months before returning to work recently.
She has been assured categorically that he will never be involved with her again.
She has a lovely paper trail of his treatment of her but the tape is chilling.
They do not want this to go public.
Her HR director put his face in his hands when her husband played the recording for him, and told him that HE, her husband, believed it was a police matter, it was so serious.
This is only 18 months ago, and her excellent legal advice said that whilst she didn't know how far the police would realistically take it, it would be an absolute disaster for the company publicity wise if this was to reach the media that a senior member of management for 25 years was behaving this way.
Like the OP they too have done absolutely EVERYTHING to facilitate her return 6 months ago and so far so good.