Similar question, I thought it had been asked a few years ago, but couldn't find it on here: What happens if the offense is having a long huddle, and gets flagged multiple times for delay of game? Is it allowable until they're backed up to their own 10-yard line?
Had a flashback to a Ritz Brothers college football movie from the 1930's, where the brothers spend a long time in the huddle drawing up a convoluted multiple-handoff/lateral play. They get moved back something like 50 yards or more on multiple DOG violations - and still score the winning touchdown. That always stuck in my mind as a potential strategy, no matter how ludicrous, unless there's a similar provision to prevent this - maybe?