Who Exactly is Orthodox?

The Simon Sarmiento's Journal blog has a report on a Telegraph [UK] article. The article describes how some evangelical parishes in the UK are threatening to withhold funds from their dioceses. Two commenters on the blog have this to say:

I think it’s naughty — at least, it will discredit the term — to use “orthodox” to mean “our sort of evangelical”. Obviously, the self-styled “orthodox” will do so. But newspapers shouldn’t.

and

. . . This use of “orthodox” is simply a propaganda technique. These evangelicals are neo-Calvinist who don’t even interpret Calvin that well. Revisionists, who’d toss out centuries of Anglican doctrine to serve their narrow, partisan, socio-political ends.

After all, how “orthodox” is it to disobey your Bishop and withhold funding from your Diocese as a form of blackmail ?