When I saw this news, and they started talking about costcutting in the repair of rails being a probable cause....... my first thought was this is what austerity looks like.  AFAIK RENFE is still majority state owned, and has undoubtedly been told to cut costs as part of the general push for austerity.  

This and the ongoing Barcenas mess.... certainly looks like Rajoy could easily be replaced by his deputy Saez Santamaria.  The present looks a lot the scandals that brought down PSOE for a decade in the 1990s.

And I'll give my consent to any government that does not deny a man a living wage-Billy Bragg