It is unclear to me if you your problem is solved or not?
If your problem is not solved, then don't panic...
I would recommend you to go the safe way:
If you have not damaged your encrypted partition, you should be safe. The
boot loader is not on the encrypted partition. As I read your post, you
haven't done anything bad with the encrypted partition. So that is good.
So, if you have another PC you can just take out your harddisk and mount it
in another Trisquel-PC and boot with the working Trisquel. You should be able
to unlock the drive on the other system and then you can make a backup of all
your important stuff to a safe location. After that you can just put it back
in your old PC and do a complete reinstallation of Trisquel - and learn from
your mistake:)
