Well, it isn't so much logging in from outside, but rather re-mounting the partition in a manner (or under an OS) that doesn't go crazy trying to save the dead links. As I understand it, when you connect a N900 to a desktop machine via usb, the "mass storage mode" automagically unmounts the "mydocs" partition and makes it available to the external OS as a removable FAT drive (with read/write permissions). I can't imagine that the external machine would care about preserving the links, so you need only open the FAT drive on the desktop computer using whatever mechanism you prefer, locate the .opera directory, and remove it...