From the pictures it looks like the screws are on the inside, so if you don't remove your seat the other option would be to remove your center console, which might be a more palatable task for you.
I feel the same way about removing my seat :shock: my friends are telling me when I do my stereo install it will make it much easier with the seats out but I am telling them I'd rather contort myself like Gumby before I do that on my own. [-(