So I do support authors being paid fairly for their work, with attribution, yet I do not support DRM.

Since we are talking about e-borrowing I assume DRM are involved. If they are not, ignore the rest.

The point of DRM (ignoring their terrible side effect) is precisely to keep on controlling data even after content has been released. There is a validation mechanism (typically pinging back the digital right owner) to insure that the file can indeed be read. So... do not validate all the signed books already out, issue a new key for the library to "e-borrow" (hate that term) once again. Why is this even taking more than 1min? I don't get it. It feels like once again in theory it could be positive but in practice the negative side effects of DRMs trump out everything.