No its not possible for 343 to do that anymore they lost the ability some time ago. Unfortuanatly its now impossible to unlock even if you do the vidmasters because the button on the old bungie website no longer works.
Marine - Iron
Made your first hot drop into HaloWaypoint.com
Halo 5: Guardians MP Beta participant.
View your Service Record on the web.
Become a member of an active Spartan Company.