It's precisely because of bugs like this that I downgraded to 1.09 once I formatted my 2TB drives using 1.10. Version 1.09 does have its own demons, but nearly as obtrusive as the ones reported for 1.10.
I would reset to factory defaults (presumably restoring web i/f access), use the web UI to flash to v1.09, then customize as you wish. BTW, when I did this, I experienced no loss of data, not a hitch whatsoever.
HTH,
DH