this is what lst does, creates more tops, makes the plant bush out, keeps everything level canopy, therefor more light penetration, then onto more yield in the end result,i would also suggest super cropping, and what i have recently discovered, a twist supercrop, its is where you twist the stem until you hear a crack, creates knuckles in the stem for better nutrient absorbing..... try reading up on the thread called supercrop and canopy control, real helpful thread, and a great bunch of guys there toowilling to help.
a closer inspection of ur pics,i see what seems to be a white powder on your plants, this could be powdery mildew, readup about it,and if it defonatly is powderymildew, its time to chop and try again im afraid,its a danger to smoke,if you plant even survives that long.
you can see a white powder on my plant, it is not powdery mildew, its dust from drilling holes in the wall for extraction.