Well, first, there's no issue here - avast! is not meant for this kind of "control".
If you want to control avast! remotely, you should install the "managed client" versions and controle them via ADNM.
Second, ashDisp.exe is
not the resident protection module - it's only the "GUI handler", i.e. the process that takes care of painting the icon in the system tray or displaying the "Virus found!" dialog on current user's desktop, if necessary. However, the real resident protection runs in a separate service; you don't stop it by killing ashDisp.exe
Third, there shouldn't be any need to stop the resident protection... should it?
It's rather strange that the first batch would run as expected, and the second would not (at least regarding the appearance of the dos box)... where exactly does it stop?
Btw, is it really avast! 4.7? (or rather 4.