Can. 16 §1. The legislator authentically interprets laws as does the one to whom the same legislator has entrusted the power of authentically interpreting.
In The Catholic Church, the Pope is the Supreme Legislator, thus, it is canonically ineluctable that Benedict XVI resigned in a proper canonical way because he resigned as he did knowing that resigning that way was in compliance with Canon 322.2 as he construed it.
In effect, had he desired to do so, Benedict XVI could have resigned by semaphore standing on an aircraft carrier fiddy five miles off the coast of Italy and that would have been proper because, as SUPREME LEGISLATOR, it is the Pope, not Ms. Ann Barnhardt, who decides what actions are in sync/compliance with Canon Law.
In deciding whether or not he was in synch/compliance with Canon Law when he resigned, who was the Supreme Legislator who had authority to take that decision?
What it Pope Benedict XVI?
Was it you, Disciples of Ann (D.O.A.) ?
Was it you, Lieutenant Weinberg?