Hello,
yes, Configmagic makes an Backup of your HDD-Key. On C. or E:-Drive.
Take your unlocked HDD and plug it into an PC an get the file with the HDD-Backup-KEY.
Then lock your HDD with the PC and then return to XBOX and everything will be fine.
BUT BE CAREFUL!!! Locking with wrong key will kill your HDD (unless you know the right key)
Look in Tutorials section. There you can find Tuts on how access HDD with PC. There is not need to hotswap, because your HDD is already unlocked. Yust plugin PC and access with the tools.
There is another TUT on how to lock the HDD with PC. BE CAREFUL and read twice!!!
Greetings,
Yogi
P.S.: There is no way to TSOP a 1.6 Xbox