If a coin (altcoin) of a bounty project is locked for hunters due to project bounty conditions then the related stakes will be available for trading on Tokpie until unlock date. So no obligation to deliver coin (altcoin) will arise on the date of distribution.  
The logic: by purchasing bounty stakes, the buyers take the same rights (and risks) as if they were bounty hunters. Simply saying stakes buyers pay for not doing bounty work but take the same rights & risks as all other hunters.