Recover a corrupted openoffice ods file

I have an ods Openoffice spreadsheet file with around 600 records that is corrupted, and gives the error "Read-ErrorFormat error discovered in the file in the sub-document [login to view URL] at 2,48938(row,column)." I need the records in the file recovered, I have been able to see that they are still all there, but something is wrong and the file doesn't open in OpenOffice spreadsheet anymore. Loosing a few records is acceptable. The corrupted file is attached.