You have to isolate healthy "normal" branches and just re-clone until its normal again. Just moved some plants out to flower a couple months ago and forgot to clone, the cuttings that went to flower are just now looking normal. Real pain in the ass, to be honest I wouldn't do it again. I'll just order some different seeds and lose the genetics. I'm learning to be a whole lot less attached to my genetics anymore.. Shit could all die for all I care at this point.