sure they do, it may take a while and you may have a half dead leaf hanging but when the plant has taken all it can from the leaf it will drop it, i dont cut anything thats in flower besides a small clean up around week 1.5-2 of flower, after that any cutting will cause stress to the plant, and our goal is to not cause stress. sometimes if the leaf is dead enough and with nothing more then a very gently pull ill pull some leaves off but if it doesnt give way with a gently tug then its not ready to be taken off. honestly though even if the leaf has some nutes spilled on it and its gnarled and ugly ill still leave it till the plant drops it on her own, who cares if a few leaves look ugly, looks arnt as important as a stress free life. let them do their thing and leave them be as much as possible, yah dont want your strain to possibly hermie from stress, its not worth the chance of a hermie just to get rid of an ugly leaf or 2... but to each his own i suppose.