no they still shud be fine if your careful, the cannabis plant can take alot of shit, just give them time and the stalks shud strengthen up they probably cant suppport themselves due to they have stretched to far searching for light, if u continue growing them with support from sticks they shud be fine and come september they will start budding up good, also another tip to stop them growing so lanky prune the top off and it will fill out lower on the plant and this will help it strengthen up, alos make sure they have nice big pots to grow in, bigger roots mean a more stable plant. hope this helps.
and smoking the dried out leaves is not nice!! it doesnt really do much gives u more headache than high!!

happy growing