There are other ways to do this, using scripts, or some front-ends have the ability to quit the programs they launch.
The following is the method that works best for me.
Take this attached file, unzip it, and put the quitter.exe file in the same directory as your Model 2 emulator. You run that first, then run the emulator. The ESC key will then instantly close the emulator. After it closes a program, quitter.exe will itself end, so you'll need to launch it again before running the emulator again.
With quitter.exe running, and if Model 2 is set to automatically go full-screen at launch, you can still use the LEFT ALT + ENTER button to get it in a window, in case you need to reconfigure your controls or something. Note that the RIGHT ALT key doesn't work to do this (at least not for me.)