Rich, that works by itself, but here's what I'm trying to do.
Starting from terminal mode, I want to startx, run feh to display a graphic image, and when the user presses Esc to exit form feh, it should go back to terminal mode. I added a line to .xsession to run feh and display the image, and I tried your line after that line. When I press Esc, it goes to a cross-hatch background, not to terminal mode.