The easiest way around this is to use a "wiremold" extension to mount the receptacle out from the wall- but that's no always practical.
I had to do this a while back on a receptacle box that was overcrowded because of some building handyman adding to the circuit. The man had wrapped additional conductors under each one of the terminal screws in the outlet, so that each terminal screw held two wires!
I pigtailed all the lines together and all the neutrals together so that I ended up with four wires (two lives, two neutrals, one wire per screw) and had to use a metal Wiremold box in order to extend the box so I could fit the receptacle.
It was either that or rip up the concrete wall and install a bigger box....not an option. Glad to see I'm not the only one who's done this. There's another receptacle I'm going to have to do this also.