How do I remove my SD card safely without unmounting it first?

The LCD in my Moto E is out, and my screen is completely black, but I can still touch apps and I can still manage to remember where my pin code is, but I can't access the settings to unmount the SD card, and i don't want to harm my pictures.

The other option is to switch the device off but the on reboot you would have the lock screen to contend with. You may be lucky just by removing the card and fix any possible corruption using chkdsk in Windows