Wasn't there a poster who wrote one time that his state requires a technical foul for this, or am I mis-remembering?
As far as I'm concerned (the rules don't explicitly state this), my jurisdiction for the second game of a DH doesn't start until I come out to observe warm-ups following the end of the first game. Anything that happens prior to the end of the first game is not my issue.
But, somewhere out there is "that guy" who would assess a T for this without any guidance from his state to do so.