You are not a bad person. Your abuser is controlling and manipulating you back under his thumb, it's been 9 days with no scapegoat and nobody to take his anger out on. The honeymoon period (where abusers promise to change, treat you like a queen, and pretend they are perfect) is very short. My guess is by the third day he would be yelling at you for leaving him, being suspicious of WHY you left, what you did while you were apart, WHO you were with, any number of things.

Abuse typically escalates after the victim leaves, when the abuser convinces the victim to come back, the abuser becomes convinced that no matter what happens, the victim will always forgive and forget.

Please stay separated and safe until you gain perspective on this situation. Here's a hand you can hold and a shoulder to cry on if you need it.