Nope... once a thread has become corrupted, it's pretty much unsalvagable. Usually they disappear the next time the forum is rebuilt or reindexed.

As far as transferring them, you could try a technique Randy used for FT Dining, where you copy the content of the thread and start a new post in a new thread with it. It would all then be in a single post (your's) but at least it'd be in a noncorrupted thread.