well none of the plants have had anything like this affect them and i do handle them alot now that they're in flowering(ill go in and rough em up a bit) and it dousnt seem to be spreading. plus i already cloned it haha. but with it falling behind in resin production it'll prolly get trashed anyway. i did have one of the slower growing plants have curled leaves but that was due to a ph problem and she went back to normal once it was fixed.Most likely a virus take the curled part of and trash it don't clone a diseased plant because all the clones will have it and it's spread by insects or a pair of scissors. what soil are they growing in? If it were me I would trash the whole set up and start fresh soil and plants fighting that shit is almost futile.
i started them in half n' half of miracle grow and back yard soil. after dealing with them getting burned alll the time i switch to pure back yard dirt and compensated with extra nutes. it dries out fast but thats good for me as i tend to over water.