ruderalis is a mystery to me, man. Mybe it wants to flower but won't fully flowe until the nights are longer even though it's auto. Maybe those small buds are all the plant produces and now because they haven't been picked it's continuing the cycle and reverting to veg. And maybe, don't mean to make you paranoid, but maybe someones been checking up on them at nght with a flashlight ad it's screwing with them. I'd go there at night and look for any light pollution. It may be an auto, but its genes more than likely aren't pure ruderalis and the plant appears somewhat confused as to what it should be doing. A better source of info might be to contact the breeder or seedbank. Good Luck.