Dirk Jongkind was kind enough to come back and leave a comment letting me know that Tyndale House has now made available Tregelles Greek New Testament under a Creative Commons license.
The website has a lot of great information about the text and the Dirk has already posted at the Evangelical Textual Criticism Blog about the announcement.
Two different texts have been made available. The first “TNT” is the original Tregelles text with no corrections all of its printing errors still intact. The second, “TNT2” is a text where they have worked to remove all the obvious printing errors in the text. Both texts are available for download.
I’ll be putting the text in to FLEx later this week.