Hello guys!

I made a layer and drew a frame on it. Then i went to the print sheet, and chose the freeze tool and froze the frame from there, making it dissapear from the print sheet but still being visible on the model page. However, now even if i delete the frame from the model page, it won't allow me to delete the layer i drew it on, appearently because of the freezing I did on the print page. 

What can I do? I tried the thawlayers command, but even that doesn't do anything. Is there a way to force delete layer?