Yeah man, tie it down. 400 watts gets pretty hot. Using cell ph, so I can't see much in pics, but it looks like only leaves are burned. Let it go, & if it (leaves) die, they will fall off on their own. If bud got scorched, the scorched part will stop growing, but will continue to grow from around it (unless its badly burned, but if so, still dont cut it), so leave that alone too. But by all means, bend & tie away from thoes hot lights. Spray misting raises humidity, helps slow transpiration. Is your grow room air dry or moist. Plans like humidity, but too much in an enclosed space can encourage disease. Looking good. I wouldn't sweat the scortch. It happens.~~~~~~~~PEACE!~~~~~~~~~