Knowingly exploiting the situation or not --> This has to do with whether there are consequences for player conduct, such as DQ from the game, DQ from the tournament, DQ from all tournaments ever.
Not knowingly exploiting the situation, but 'stuff happening during the unknown stuck ball phase' --> TD's determine if the activity was material or not, and either the game gets voided or not. No penalties here for Player Conduct
We've had this discussion on the issue of materiality for a given situation . . . so you don't always void the score in a given stuck ball situation.
For example, if you have 400mil on TZ, and I have 30mil on TZ on ball 3. I play Powerball Mania, and unknowingly play it with a ball stuck on the playfield for twenty minutes, finally trap up to get a TD. If I show up and the current Powerball Mania score is 5.5mil, I'm NOT going to void the game. However if the Powerball Mania score is 4.2bil, I would review the situation with my fellow TD's and call for that game to be replayed for player 2 (or if the Powerball Mania score is actually known, we can back off those points, give a new 3rd ball, and the player can finish their game on a fresh game).
The penalty for intentionally taking advantage of the situation is certainly far more likely to happen with a high level player who knows every nuance of every game . . . but our hope is that those players are likely to be the ones that aren't complete assholes . . . you know . . . for the good of our sport