I suggest you copy your whole sieve script, and send it by private message to someone you trust (I suggest Bill). To copy your entire sieve script, using the browser interface:
- Go to Settings -> Rules
- Go to the bottom of the screen and select Edit custom Sieve code
- At the top of the screen, you now have Copy to Clipboard. Click on this and you have a copy of the sieve script that you can past into a private message.
Let us know if you need a guide on how to send a private message (to Bill or whoever).