Hey man, I've never heard of the pinching strategy...that's pretty interesting. I would expect pinching the stem would cut off the flow of xylem and phloem throughout the plant right? I'm sure if you "crack" the main stem you notice some growth retardation for a period correct? How long does that usually last? Thanks and Happy Holidays!joker gave you some decent info for the most part. heres what you do buddy, take that hps and put it about 4 inches from your plants. that is a 5 gallon bucket so give it about 2 or 3 liters of water every few days(i usually stick my finger about an inch or two in the soil to see the dryness. pinch your MAIN STEM at about every other node to the point where you hear a crack. this is damaging the cytoplasm and will make the plant grow stronger fatter stems which will make ur growth more robust...and finally the big step...REVERT HER BACK TO VEG! from the looks of her progress, it is not too late to have her go back into veg and get some real size and leaves on her. she should not hermie, although she may start to grow some weird leaves, she should be fine. hope this helps