Approval Status column showing in edit document properties

I have run into a weird issue with the 'Approval Status' column. Even though require approval is turn off, the column is still displaying in my edit properties. When I go in under Document Library Settings, it does not appear in the list of columns.

The values in the drop down are appearing as:
0;#Approve
1;#Rejected
2;#Pending

When I try to save after editing properties (without changing any values), I get the message:
Failed to get value of the "Approval Status" column from the "Moderation Status" field type control.  See details in log. Exception message: Input string was not in a correct format..

To reiterate, this column is not showing up in document library settings, so I cannot remove it.

I am running WSS 3.0. Logging is turned off due to disk space issues.

Thanks,
Dustin