I doubt it would be a calcium defeciency based on your statements and what lack of calcium actually does to the bones IMO it is a respority related illness what exactlly did you clean the enclosure with? and how did the Bluie die?
Hope he is getting better. Sounds like he could do, he has survived so far. Good to hear. Don't worry too much about him being non-responsive. He has been through hell and I am sure in time he will be back to his normal self.
I wonder if this is what happened to one of our older boys. We bought a 2yr beardie and one day noticed his beard go very black. This is apparently a breeding sign. But the next day he was dead. We took him to our reptile vet for an autopsy. Vet said he could see nothing to give him any suggestions. Pathology came back with little more to offer than heart failure. He was a very healthy lizard. I wonder if he died of a broken heart We just bought him from someone who had him since he was a baby.