You can not (rpt not) tell who was responsible for deleting a given post. That’s one of the subtleties of the system. 😬
Why do contributors delete their own posts?
A significant contributor who shall remain unidentified deletes posts shortly afterwards. It’s not done with the intent of correction, but for the purpose of limited viewing. I wonder what rationale warrants this behavior. It certainly not for the benefit of providing context for later viewers who might want to learn from the thread.