'sudden though' is a correct and usable phrase in written English.
It is used to introduce an unexpected event or opinion that conflicts with something that has just been mentioned. For example: "His sudden departure was a shock to his friends, sudden though it was."
All of a sudden, though, it looks like there actually are some people at Disney who are thinking hard about distribution issues.
All of a sudden, though, the Schardins and others who have ended up trying to eke out a living in some of America's windiest parts have found themselves feeling pretty lucky that their forefathers staked out land exactly where they did.
All of a sudden, though, a group of four mouthy girls from Vancouver have turned up to save the day and show all the dickless boy-wonders how it's done.
All of a sudden, though, patient fans are being rewarded.
I don't know why he has decided to become a cowboy all of a sudden, though.
Nothing wrong with Berdych's all of a sudden, though - at 30-0, he stoops low and pins one into the corner.
Even the wisest person may tremble or grow pale at some sudden danger, though without false assent (fragment 9).
The sudden rise, though possibly explained by better data, will raise concern about the apparently growing appeal of extremism.
Mr. Feller could not readily explain the sudden migration, though he noted that fall was mating season and deer grow more territorial.
Most people already educated in the old way would hate any such sudden shift, though.In this imperfect world, then, written language only partly reflects speech.
A disagreement between Mr. Zimmer and the board appeared to be the reason for the sudden dismissal, though it was not immediately clear what that disagreement was.
