Crashed screen

I have a problem in one of my projects. With one screen... I can't move it, delete it or resize it, so basically can do nothing. I can modify on-screen elements, but not the screen itself. Has anyone dealt with such issue? The only solution I could find is to duplicate design file, but then i need to recreate the links and it's a bit bureaucratic, cause I have to then place new links in the project documentation...