It's possible, even today. It only requires a flash crash to happen, and based on that it could even reach $100 but I'm sure that exchanges will reverse trades at that point. I remember a case where Gemini reversed trades when a whale accidentally bought the market up to $2000 a long time ago. It's pretty annoying to see how it's practically impossible to allow a free market to do its thing. Exchanges shouldn't act unless it concerns hackers or other suspicious activity. Someone accidentally buying or selling shouldn't be a reason to reverse trades. But this is basically the only way to see these levels ever again....