Purple Haze canopy?

Brother your plant looks fine. What happened (I presume) is that this plant was on the outer edges of your grow space. The plant stretched and hardened up after awhile and kept its structure. This is natural. You can cycle your plants around your grow space or use something like a par meter or alike and get a reading of what spots in your tent are getting the most light. Regardless of what you do, your plant will do it's best in order for it to get as much light as possible.