QSA don't start feeling guilty for the cage. You know babies can do all sorts of wierd things. No telling what happened and maybe (praying) it's not broken. Maybe there was some really rough play and he got hurt. I know you are worried as any of us would be. I really hope everything turns out ok. You have done a fantastic thing for these babies and with all the youngsters you bring home one freak accident is bound to happen. He is such a cute little guy and I know this has to be breaking your heart.
You've got the PT prayers going and they are mighty powerful! Try not to worry too much and keep us posted on how he is doing. We're thinking about and praying for you and Emerson.