Personally, I don't use SED nor have I ever set a password. However, per the manual I believe that even though you set a PW you did not do this part correct?:
Code:
Next, remember to initialize the devices:
sedhelper setup password
So... I would assume that you could simply go back to the disk via the GUI and set the PW to be empty/blank?
I am just speculating mostly, so I would not blame you for waiting to see if another contributor chimes in. :)