Apps4Flip-Admin
The service name of switchboard is ug.air.switchaccess.SwitchAccessibilityService, so assuming that after youre finished with it the package name will be com.android.cts.switchaccess, the commands should be
am startservice com.android.cts.switchaccess/ug.air.switchaccess.SwitchAccessibilityService settings put secure enabled_accessibility_services com.android.cts.switchaccess/ug.air.switchaccess.SwitchAccessibilityService settings put secure accessibility_enabled 1
(I think the ug.air.switchaccess.SwitchIME service I wrote before is a secondary service)
I havent tested it, because i dont have the Exalt
__