Remove multiple 'ThisWorkbook' modules from Excel VBA editor

An excel-vba Project is hosted in a Workbook... seeing two Workbook objects under a single project is very worrying (and looking at the icons the VBE is using for the "ghost worksheets", it seems there's even more workbook objects than that) - I'd suggest you export all modules and copy the sane worksheet/workbook code into a new file (I wouldn't even try to open the ghost copies), and destroy that one.

Your project is most likely corrupted in some way.