Vector Tourex - windage dial stuck??

Hi, so after almost four months I finally get the opportunity to do some shooting - and all of a sudden my optics go on strike. The windage dial just-won't-budge at all!

I mean, I have not and am not really planning to use anything but fingerstrenght - too afraid using any kind of tools would only kill the scope alltogether!

Other than that I have no idea as to what might have gone wrong; I did pack the scope into a very full backpack , so it might have experienced some pressure, maybe torsion, even G-forces from tossing it up onto /taking it down from luggage racks, but definitely no direct impact, as there was plenty padding all around.

Any thoughts?