Capitalists do not merely "hold the levers of production," they outright own it. My entire point is that control and ownership are different. I am not contradicting myself in any way, it is your point that any grouping of people whatsoever is a class.

Socialist democracy does not remove the ability for people to hold administrators accountable. You invented this.

Administrators are a type of worker, not a class. Power is held by the working class as a whole, not merely administrators. Administrators serve a specific function in large organizations of people, not a class in and of themselves. Socialist democracy begins from the people, not the party. The role of the party is in guiding the working classes as fellow workers, not as commanding the working classes from above.