I don't think it's online, and unfortunately i've now lost my copy of the magazine.
It looks like part of an ongoing discussion though, so contacting Wired to get the whole storyis probably best. Good luck!
I went out and bought a copy this morning :) Fascinating letter, the chief executive's commitment to opening data feeds is completely at odds with what they're doing here. I've left a comment on his blog post at https://nationalrailenquiries.wordpress.com/2010/10/22/146/ so let's see if it elicits a response.
