it seems one segment of my Trados translation memory is corrupt, thus I can't export, reorganise or any such easy thing that could solve the problem.
What error message (if any) do you get?
I've tried to reorganise with new .iix, .mdf, .mtf, .mwf (from a freshly created TM) files but to no avail.
Now that wouldn't work, as the index files for an empty TM still contain information that doesn't match your .tmw file.
What you could try to do is to copy the .tmw file into a separate folder, and try to open, export and/or reorganise it.