Don't worry dirty tubs bugg the crap out of me too. but it's not a big deal at all. Stress could effect a potential lock so I'd let them be until after they lock. If hasn't happened by morning or afternoon you could take out any soiled bedding and do a quick replace. It sounds like a lock is imminent though so it shouldn't be too long. If they are in a lock and your quiet you can probably change the effected bedding too I just would try not to disturb them too much. Hope this helps.
Morgan