i think this happened around day 12 of flower. the pick is about five days later.
i had topped this plant in veg. about day 12 of flower i was spreading it out a little at the canopy and i split it at the Y. it was bad. almost separated from the plant. i could put it back together and you could barely tell it was split. i took some wire and tied it together. about 5 days later it was fine. it even swelled up around the split, and the lower buds sites went nuts.
same batch of plants where getting to close to the light. so i would bend the branch over, even break it, it would grow right back up to the light the next day.