Hi there,
Thanks for reaching out.
We've received numerous reports of name changes prompted by the Server Slam, and are investigating further.
That said, please reach out to us via [url=https://safety.bungie.net/hc/en-us/requests/new?ticket_form_id=360000654371]this contact form[/url] and select "Bungie Name was changed" as the reason for your request.
Also, please be sure to use our new [url=https://help.marathonthegame.com/hc/en-us/community/topics]Marathon forums[/url] for your future Marathon inquiries!