Yes, I think you are remembering Jack Posobiec, ran an interview with a notorious 4chan denizen named "Microchip" who claimed to have been the original Q. He claimed he created the persona with help from another online friend, and they produced the original Q posts for the first few months.
In that same interview he claimed that other board admins had taken over the persona and that he didin't know who the (then current) owners of the Q feed were.
Q famously transitioned from 4chan to 8chan a few months after it began, too. So, that somewhat fit with his story and timeline.
Microchip did not claim Q would stop now that he had told his story, in fact quite the opposite. He claimed that he had totally lost control of it to "admins" and that they would continue it for as long as they wanted to.
Most people felt that Microchip's story, and the evidence he provided, didn't hold up to scrutiny, and you don't get to be a famous 4chan denizen without creating some controversy. Microchip was already a notorious "sh*t-poster", as they term it.
So for every Q skeptic saying "see, we told you it was a LARP" there were 3 Q beleivers saying "yeah, and you fell for it".
thx...