I was able to find the settings you described. I cleared the data for the app called "Contacts" and it went down to 0 KB. There was another app called "Contacts storage," and I tried to clear it too, but the clear data button was grayed-out and I couldn't click on it. There are also apps called "contacts sync" and "contactsdata". I couldn't clear the contacts sync app (again, the clear data button was grayed-out), but I did clear the contactsdata app.
After clearing Contacts and contacts data, I went into the contacts app itself, and everyone is still listed. The force close problem continues. Also, if I go back to the settings/manage apps page again, then it now shows data in Contacts again. Weird.
Any other ideas?