Filevault error on login....please help

Hi all ,

I'm getting a filevault error when trying to login to my account.

I recently deleted a sparse bundle using disk inventory x but i did a backup before deleting.

Unfortunatley when i try and boot up from a time machine backup I keep getting the "unable to login to filevault user account"

I'm in aright pickle as i have no access to my home folder.

Please help!!!