I upgraded to 3.5 in my "sandbox" site, and the question has come up: Does anyone know of a way to disable the new Media Manager, or, more specifically, revert back to the version that existed in 3.4 without having to do a manual downgrade of the whole system? The new 3.5 is otherwise fine except for the new Media Manager, thus trying to avoid a manual downgrade.
I manage my site's images outside of my WordPress installation for a number of reasons, and thus I use the "From URL" feature a lot, and the new Media Manager destroyed a lot of the functionality that I rely on (thus my production sites are staying on 3.4 for now).
I have a feeling that the old version of the Media Manager still exists somewhere, because if one goes in to edit an image, one gets the old dialog box from 3.4.
Does anyone know how to do/find this?