"I'm not mad. I just... You can turn on the lights if you want. It's kinda dark in here, I know. I just didn't feel like having the lights on. I was... Thinking."

'Thinking' sounds a lot better than 'panicking,' although the latter is more true than the former. He doesn't know whether he hopes Ned will turn on the lights or not. It's up to him, he decides, he'll let Ned do whatever he wants. The fact that he'd shown up is enough to let him know that Ned cares, probably cares a lot more than his coworkers, even though they'd talked a good game about how concerned they were and urged him to come out. All they cared about was their deadline.

"I know I should come out of here eventually. I'm making everyone worry, blah blah, I've heard it before. This isn't the first time I've locked myself in this closet and it's definitely not gonna be the last, in case you were hoping that this was a one time thing. I'm okay, though." A long pause, and then... "No, I'm not okay. I'm a mess."