Hey Cruzer! I don't have personal experience with this at all but it does indeed seem to have re-veg'd, judging by the new-looking giant one-bladed leaves on top. It also seems like they're heat-stressed and perhaps overfed, along with an improper pH.

I don't know what the best course of action for you would be, but I would check the trichs and see where they're at. I think you might have had more than three weeks left before the light poisoning so they could still be pretty clear. If that's the case I'd just let her go and keep it on a proper light schedule til finish. Yeah, I'd say your yield will be affected, potency probably, and gpw/m definitely. Oh well though, you live, you learn! Keep on growin' and having fun. You'll get there. :thumbsup: