There have been no chemicals sprayed in the room save for the Febreeze mentioned earlier that was sprayed on a blanket away from the racks.

I'm hoping this is just malnutrition as the little spider female I have from my first clutch this past season did the same thing. She wasn't eating and got extremely weak. When she ate, she would actually flop over when she was trying to swallow a meal because she didn't have the strength to hold her head up. This pin was doing the same thing when I assist fed her.