And you showed assertiveness. Stop doubting yourself. Do what makes you feel better. Stop worrying about his reaction. You didnt do that to punish him. You did it because you want him away from you.
If je does ask, keep it short. "We are separated, so I need MY personal space"
Thank you ST. You are correct. I actually thought about it for some time, our conversation just gave me the push I needed. I did not do this to punish him, it was not out of spite. I do want him to understand that, but he will think whatever he wants to think.