A bit off topic, I 've got a "Super-vee" setup on one of my Strats and it is incredible...in that it never goes out of tune, adjustable saddles etc. IF>> IF you can get by the look of the nut, this thing smokes a Floyd.
I say replace the block. Cheap. You can prob get better/higher quality by a full replacement. Screw the unscrewing. Just buy a new one. Maybe cheaper than the tools to do it yourself.