You can check which password has been crypted without posting it to a website using:
ruby -e 'puts "hackern".crypt("8h")' #=> 8h48GPxmwy.EA
ruby -e 'puts "hackern".crypt("8h")' #=> 8h48GPxmwy.EA
1) fire up terminal on your local macbook and enter the above string subbing in your password
2) open the spreadsheet and set the filters to domain - enter your domain name(s) and hit submit
3) If any results are returned then compare the MD5 hash in the result set with the MD5 hash returned from step #. if they're the same, start changing your passwords.