Have tried disabling the VAICOM PRO plugin? It likely functions even when its profile isn't loaded.
If you don't use any other plugins, you can disable plugin support by unchecking "Enable Plugin Support" on the "General" tab of the VoiceAttack options window; Otherwise you'll want to use the "Plugin Manager" button on that tab and uncheck the box next to the VAICOM PRO plugin, specifically. Restart VoiceAttack after doing so to make sure the plugin is fully unloaded.