As promised I have added the ability to download the form data as an Excel spreadsheet (CSV) .
I have created an include file /app_config/WFFM.SQLServer.SaveToDatabase.config to bind the command to the class that exports the CSV.
<command name="forms:exportformdata" type="WFFM.SQLServer.SaveToDatabase.Infrastructure.Commands.ExportFormDataCommand, WFFM.SQLServer.SaveToDatabase" />
Open the content editor navigate to any form, select the “Forms” tab, and click on the “Export Data as CSV” (see below).
For more information about the module please refer to original blog post, or get the sitecore package from sitecore marketplace or the source code from GitHub for the source.