About six months ago I had a similar incident. My menu bar in Word 2001 (OS 9.1) froze or would sporadically open but no commands would execute.
After rebuilding the desktop and running Techtool,and a restart, Word was still dead.
What worked was tossing the whole Microsoft pref folder in the system pref folder.
I had to reset some prefs, but Word came back to life.
Good luck-B