It *is* a good ideea, but it's automatically turned on for every tank on each Aslain mod update. THAT makes it *extremely* annoying. Need an option to turn it off by default.
For the rest, as Aslain mentioned you need to edit "hangar.xc" (World of Tanks\res_mods\configs\xvm\Aslain), find line "enableCrewAutoReturn" and replace "true" with "false". Keep in mind that removes the option completely.