Invited to my sister's and then told to go

You had been effectively thrown out after being invited, why didn't you ask why then? How was there any excuse on your part to leave when you had been told to? Was this the first time you had ever been invited or something? Why can't your sister come to you?

I would not need to be “banned” - I would refuse to ever go!
However, you wrote in early June about your “toxic” sisters, I am assuming this is the one who does not have your mum living with them, as you talk about her (the sister) having to be up early for work? You say you were talking about pleasant things so presumably your relationship had been restored.
But who goes to bed at 8.30?
Is he really such a bully that you could not answer back? There was nothing to read incorrectly. He was insufferably rude and you are well out of it - if the relationship is worth saving, either meet on neutral ground or invite her to your house on her own.

Did you know before this that her husband was a manipulative control freak who daredn't sleep alone, even at 9pm?

Surely he's shown some signs of a personality disorder before this?

If they've been married a long time, then clearly she tolerates it....or doesn't know how to get free of him - or maybe doesn't want to give up the lifestyle isfthey're comfortably off.

There are many reasons women stay with manipulative bullies but if your sister contacts you, and there's no reason why she wouldn't, even if you're banned from their house, then I suggest you help her get away from this moron - if she wants to do so..

Whichever way you look at this, it's no fault of yours.