A bit more info on e-Sword freezing when minimized/maximized:
You'll notice when you minimize e-Sword that the entire program shrinks down to a tiny picture of the open program on your dock. So, you've got the e-Sword icon and a tiny representation of the open program window. You'll get the freeze if you click on the e-Sword icon to bring the program back up. If you click on the tiny representation of the window, itself (not the e-Sword icon), the program will return in an un-frozen state.
Setting the program to run in an emulated virtual desktop, as described in the above post, will prevent e-Sword from popping back up, at all, when you click on the e-Sword icon. You'll need to click on the shrunken window in the dock to bring it back.
So, the emulate virtual desktop option eliminates some confusion in that it's no longer possible to bring up the frozen window, at all, but in order to re-maximize the program you'll still need to click on the tiny window in the dock. For this reason, emulating a virtual desktop isn't really necessary to correct this behavior, but it'll help you remember because it prevents the frozen window from occuring in the first place.