The current rules state the timer stops when you go through the door after talking to Bo. But after this, the celebration starts and you still have to button mash through it. That's why I am reconsidering this rule and changing it to: 'Stop the timer when the credits start rolling'. This means the current runs should be re-timed to match the new rule.
I won't change it right away, I am posting this here to allow anyone to state their opinion or give their thoughts about this rule change.
I would just keep it the way it is, considering its not going to impact the speed of a run. It wont mean the difference between WR and 2nd place.
Also, if we logically think about it, the "games" are over once this cut-scene starts, so having the run end there is only appropriate. There is no turning back once that ceremony begins, meaning the game is technically over.