i think some leaf deformities can be remedied with a silica supplement, i know
botanicare has one called
silica blast, there are others just as good....the only other thing i can think of is that you might have salt buildup in your grow medium, that can create a hypotonic, i think that is the word, condition where osmosis operates against the plant and sucks water out of the plant....but listen there are way smarter people than i, i always feel like an amateur at this. if you cant get an answer, search the forums, its a pain sometimes, but most questions have been answered already, u just have to have time to find them.
i have had an occaisional goofy leaf, thats what i call them, but never in great numbers, one or two here and there....have you moved them or your light any, i was thinking that they if the leaf was young it might have tried to turn and grow towards the light, if the light has been moved...
they sorta look like mine do if i use the fim topping method
that is all i got....