CAMELOT FANTASIES

Yes, Rafa said there's edema (swelling) on his back.

http://rafaelnadalfans.com/2014/01/29/rafael-nadal-talks-about-his-back-injury-rehab-and-returning-to-tennis/

I don't know much about this kind of thing, but I'm thinking this means it wasn't back spasms, which is what they had thought it was?.

He said he had felt something, though minor, at Canada last year.  They need to look into it and be careful 

I cannot imagine -30 degrees.  The most we ever get around here (Chile) is, I don't know, -5 I guess.  Most people do not have heat in their houses though, so it can feel really cold.